Chapter XII: Front Matter (12)

AVIGNON, a city of south-eastern France, capital of the department of Vaucluse, 143 m. S. of Lyons on the railway between that city and Marseilles. Pop. (1906) 35,356. Avignon, which lies on the left bank of the Rhone, a few miles above its confluence with the Durance, occupies a large oval-shaped area not fully populated, and covered in great part by parks and gardens. A suspension bridge leads over the river to Villeneuve-les-Avignon (_q.v._), and a little higher up, a picturesque ruined bridge of the 12th century, the Pont Saint-Benezet, projects into the stream. Only four of the eighteen piles are left; on one of them stands the chapel of Saint-Benezet, a small Romanesque building. Avignon is still encircled by the ramparts built by the popes in the 14th century, which offer one of the finest examples of medieval fortification in existence. The walls, which are of great strength, are surmounted by machicolated battlements, flanked at intervals by thirty-nine massive towers and pierced by several gateways, three of which date from the 14th century. The whole is surrounded by a line of pleasant boulevards. The life of the town is almost confined to the Place de l'Hotel de Ville and the Cours de la Republique, which leads out of it and extends to the ramparts. Elsewhere the streets are narrow, quiet, and, for the most part, badly paved. At the northern extremity of the town a precipitous rock, the Rocher des Doms, rises from the river's edge and forms a plateau stretching southwards nearly to the Place de l'Hotel de Ville. Its summit is occupied by a public garden and, to the south of this, by the cathedral of Notre-Dame des Doms and the Palace of the Popes. The cathedral is a Romanesque building, mainly of the 12th century, the most prominent feature of which is the gilded statue of the Virgin which surmounts the western tower. Among the many works of art in the interior, the most beautiful is the mausoleum of Pope John XXII., a masterpiece of Gothic [v.03 p.0064] carving of the 14th century. The cathedral is almost dwarfed by the Palace of the Popes, a sombre assemblage of buildings, which rises at its side and covers a space of more than 1 1/4 acres. Begun in 1316 by John XXII., it was continued by succeeding popes until 1370, and is in the Gothic style; in its construction everything has been sacrificed to strength, and though the effect is imposing, the place has the aspect rather of a fortress than of a palace. It was for long used as a barracks and prison, to the exigencies of which the fine apartments were ruthlessly adapted, but it is now municipal property. Among the minor churches of the town are St Pierre, which has a graceful facade and richly carved doors, St Didier and St Agricol, all three of Gothic architecture. The most notable of the civil buildings are the hotel de ville, a modern building with a belfry of the 14th century, and the old Hotel des Monnaies, the papal mint which was built in 1610 and is now used as a music-school. The Calvet Museum, so named after F. Calvet, physician, who in 1810 left his collections to the town, is rich in inscriptions, bronzes, glass and other antiquities, and in sculptures and paintings. The library has over 140,000 volumes. The town has a statue of a Persian, Jean Althen, who in 1765 introduced the culture of the madder plant, which long formed the staple and is still an important branch of local trade. In 1873 John Stuart Mill died at Avignon, and is buried in the cemetery. For the connexion of Petrarch with the town see PETRARCH.

Avignon is subject to violent winds, of which the most disastrous is the _mistral_. The popular proverb is, however, somewhat exaggerated, _Avenio ventosa, sine vento venenosa, cum vento fastidiosa_ (windy Avignon, pest-ridden when there is no wind, wind-pestered when there is).

Avignon is the seat of an archbishop and has tribunals of first instance and of commerce, a council of trade-arbitrators, a lycee, and training college, a chamber of commerce and a branch of the Bank of France. It is in the midst of a fertile district, in the products of which it has a large trade, and has flour-mills, distilleries, oil-works and leather-works, manufactures soap, chemicals and liquorice, and is well known for its sarsanet and other fabrics.

Avignon (_Avenio_) was an important town of the Gallic tribe of the Cavares, and under the Romans one of the leading cities of Gallia Narbonensis. Severely harassed during the barbarian invasions and by the Saracens, it was, in later times, attached successively to the kingdoms of Burgundy and of Arles and to the domains of the counts of Provence and of Toulouse and of Forcalquier. At the end of the 12th century it became a republic, but in 1226 was taken and dismantled by Louis VIII. as punishment for its support of the Albigenses, and in 1251 was forced to submit to the counts of Toulouse and Provence. In 1309 the city was chosen by Clement V. as his residence, and from that time till 1377 was the papal seat. In 1348 the city was sold by Joanna, countess of Provence, to Clement VI. After Gregory XI. had migrated to Rome, two antipopes, Clement VII. and Benedict XIII., resided at Avignon, from which the latter was expelled in 1408. The town remained in the possession of the popes, who governed it by means of legates, till its annexation by the National Assembly in 1791, though during this interval several kings of France made efforts to unite it with their dominions. In 1791 conflicts between the adherents of the Papacy and the Republicans led to much bloodshed. In 1815 Marshal Brune was assassinated in the town by the adherents of the royalist party. The bishopric, founded in the 3rd century, became an archbishopric in 1475.

See Fantoni Castrucci, _Istoria della citta d'Avignone e del Contado Venesino_ (Venice, 1678); J. B. Joudou, _Histoire des souverains pontifes qui ont siege a Avignon_ (Avignon, 1855); A. Canron, _Guide de l'etranger dans la ville d'Avignon et ses environs_ (Avignon, 1858); J. F. Andre, _Histoire de la Papaute a Avignon_ (Avignon, 1887).

AVILA, GIL GONZALEZ DE (_c._ 1577-1658), Spanish biographer and antiquary, was born and died at Avila. He was made historiographer of Castile in 1612, and of the Indies in 1641. Of his numerous works, the most valuable are his _Teatro de las Grandezas des Madrid_ (Madrid, 1623, sqq.), and his _Teatro Eclesiastico_, descriptive of the metropolitan churches and cathedrals of Castile, with lives of the prelates (Madrid, 1645-1653, 4 vols. 4to).

AVILA, a province of central Spain, one of the modern divisions of the kingdom of Old Castile; bounded on the N. by Valladolid, E. by Segovia and Madrid, S. by Toledo and Caceres, and W. by Salamanca. Pop. (1900) 200,457; area, 2570 sq. m. Avila is naturally divided into two sections, differing completely in soil, climate, productions and social economy. The northern portion is generally level; the soil is of indifferent quality, strong and marly in a few places, but rocky in all the valleys of the Sierra de Avila; and the climate alternates from severe cold in winter to extreme heat in summer. The population of this part is mainly agricultural. The southern division is one mass of rugged granitic sierras, interspersed, however, with sheltered and well-watered valleys, abounding with rich vegetation. The winter here, especially in the elevated region of the Paramera and the waste lands of Avila, is long and severe, but the climate is not unhealthy. In this region stock-breeding is an important industry. The principal mountain chains are the Guadarrama, separating this province from Madrid; the Paramera and Sierra de Avila, west of the Guadarrama; and the vast wall of the Sierra de Gredos along the southern frontier, where its outstanding peaks rise to 6000 or even 8000 ft. The ridges which ramify from the Paramera are covered with valuable forests of beeches, oaks and firs, presenting a striking contrast to the bare peaks of the Sierra de Gredos. The principal rivers are the Alberche and Tietar, belonging to the basin of the Tagus, and the Tormes, Trabancos and Adaja, belonging to that of the Douro. The mountains contain silver, copper, iron, lead and coal, but their mineral wealth has been exaggerated, and at the beginning of the 20th century mining had practically been abandoned. Quarries of fine marble and jasper exist in the district of Arenas. The province declined in wealth and population during the 18th and 19th centuries, a result due less to the want of activity on the part of the inhabitants than to the oppressive manorial and feudal rights and the strict laws of entail and mortmain, which acted as barriers to progress.

Towards the close of this period many improvements were introduced, although the want of irrigation is still keenly felt. Wide tracts of waste land were planted with pinewoods by the ducal house of Medina Sidonia. The main roads are fairly good; and Avila, the capital, is connected by rail with Salamanca, Valladolid and Madrid; but in many parts of the province the means of communication are defective. Except Avila there are no important towns. The principal production is the wool of the merino sheep, which at one time yielded an immense revenue. Game is plentiful, and the rivers abound in fish, specially trout. Olives, chestnuts and grapes are grown, and silk-worms are kept. There is little trade, and the manufactures are few, consisting chiefly of copper utensils, lime, soap, cloth, paper and combs. The state of elementary education is comparatively good, rather more than two-thirds of the population being able to read and write, and the ratio of crime is proportionately low.

AVILA (anc. _Abula_ or _Avela_), the capital of the province described above; on the right bank of the river Adaja, 54 m. W. by N. of Madrid, by the Madrid-Valladolid railway. Pop. (1900) 11,885. The city is built on the flat summit of a rocky hill, which rises abruptly in the midst of a veritable wilderness; a brown, arid, treeless table-land, strewn with immense grey boulders, and shut in by lofty mountains. The ancient walls of Avila, constructed of brown granite, and surmounted by a breastwork, with eighty-six towers and nine gateways, are still in excellent repair; but a large part of the city lies beyond their circuit. Avila is the seat of a bishop, and contains several ecclesiastical buildings of high interest. The Gothic cathedral, said by tradition to date from 1107, but probably of 13th or 14th century workmanship, has the appearance of a fortress, with embattled walls and two solid towers. It contains many interesting sculptures and paintings, besides one especially fine silver pyx, the work of Juan de Arphe, dating from 1571. The churches of San Vicente, San Pedro, Santo Tomas and San [v.03 p.0065] Segundo are, in their main features, Romanesque of the 15th century, although parts of the beautiful San Vicente, and of San Pedro, may be as old as the 12th century. Especially noteworthy is the marble monument in Santo Tomas, carved by the 15th-century Florentine sculptor Domenico Fancelli, over the tomb of Prince John (d. 1497), the only son of Ferdinand and Isabella. The convent and church of Santa Teresa mark the supposed birthplace of the saint whose name they bear (c. 1515-1582) Avila also possesses an old Moorish castle (_alcazar_) used as barracks, a foundling hospital, infirmary, military academy, and training schools for teachers of both sexes. From 1482 to 1807 it was also the seat of a university. It has a considerable trade in agricultural products, leather, pottery, hats, linen and cotton goods.

For the local history see V. Picatoste, _Tradiciones de Avila_ (Madrid, 1888); and L. Ariz, _Historia de las grandezas de ... Avila_ (Alcala de Henares, 1607).

AVILA Y ZUNIGA, LUIS DE (_c._ 1490-_c._ 1560), Spanish historian, was born at Placentia. He was probably of low origin, but married a wealthy heiress of the family of Zuniga, whose name he added to his own. He rose rapidly in the favour of the emperor Charles V., served as ambassador to Rome, and was made grand commander of the order of the Knights of Alcantara. He accompanied the emperor to Africa in 1541, and having served during the war of the league of Schmalkalden, wrote a history of this war entitled _Commentarios de la guerra de Alemana, hecha de Carlos V en el ano de 1546 y 1547._ This was first printed in 1548, and becoming very popular was translated into French, Dutch, German, Italian and Latin. As may be expected from the author's intimacy with Charles, the book is very partial to the emperor, and its misrepresentations have been severely criticized.

AVILES, PEDRO MENENDEZ DE (1519-1574), Spanish seaman, founder of St Augustine, Florida, was born at Aviles in Asturias on the 15th of February 1519. His family were gentry, and he was one of nineteen brothers and sisters. At the age of fourteen he ran away to sea, and was engaged till he was thirty in a life of adventure as a corsair. In 1549 during peace between France and Spain he was commissioned by the emperor Charles V. to clear the north coast of Spain and the Canaries of French pirates. In 1554 he was appointed captain-general of the "flota" or convoy which carried the trade between Spain and America. The appointment was made by the emperor over the head and against the will of the Casa de Contratacion, or governing board of the American trade. In this year, and before he sailed to America, Aviles accompanied the prince of Spain, afterwards Philip II., to England, where he had gone to marry Queen Mary. As commander of the flota he displayed a diligence, and achieved a degree of success in bringing back treasure, which earned him the hearty approval of the emperor. But his devotion to the imperial service, and his steady refusal to receive bribes as the reward for permitting breaches of the regulations, made him unpopular with the merchants, while his high-handed ways offended the Casa de Contratacion. Reappointed commander in 1557, and knowing the hostility of the Casa, he applied for service elsewhere. The war with France in which Spain and England were allies was then in progress, and until the close of 1559 ample occupation was found for Aviles in bringing money and recruits from Spain to Flanders. When peace was restored he commanded the fleet which brought Philip II. back from the Low Countries to Spain. In 1560 he was again appointed to command the flota, and he made a most successful voyage to America and back, in that and the following year. His relations with the Casa de Contratacion were, however, as strained as ever. On his return from another voyage in 1563 he was arrested by order of the Casa, and was detained in prison for twenty months. What the charges brought against him were is not known. Aviles in a letter to the king avows his innocence, and he was finally discharged by the judges, but not until they had received two peremptory orders from the king to come to a decision.

On his release he prepared to sail to the Bermudas to seek for his son Juan, who had been shipwrecked in the previous year. At that time the French Huguenots were engaged in endeavouring to plant a colony in Florida. As the country had been explored by the Spaniards they claimed it as theirs, and its position on the track of the home-coming trade of Mexico rendered its possession by any other power highly dangerous. Philip II. endeavoured to avert the peril by making an "_asiento_" or contract with Aviles, by which he advanced 15,000 ducats to the seaman, and constituted him proprietor of any colony which he could establish in Florida, on condition that the money was repaid. The contract was signed on the 20th of March 1565. Aviles sailed on the 28th of July of the same year with one vessel of 600 tons, ten sloops and 1500 men. On the 28th of August he entered and named the Bay of St Augustine, and began a fort there. He took the French post of Fort Caroline on the 20th of September 1565, and in October exterminated a body of Frenchmen who, under the Huguenot Jean Ribault, had arrived on the coast of Florida to relieve their colony. The Spanish commander, after slaying nearly all his prisoners, hung their bodies on trees, with the inscription, "Not as Frenchmen but as Lutherans." A French sea-captain named Dominique de Gourgues revenged the massacre by capturing in 1568 Fort San Mateo (as the Spanish had renamed Fort Caroline), and hanging the garrison, with the inscription, "Not as Spaniards but as murderers." Till 1567 Aviles remained in Florida, busy with his colony. In that year he returned to Spain. He made one more voyage to Florida, and died on the 17th of September 1574. Aviles married Maria de Solis, when very young, and left three daughters. His letters prove him to have been a pious and high-minded officer, who never imagined that he could be supposed by any honest man to have gone too far in massacring the Frenchmen, whom he regarded as pirates and heretics.

See _The Spanish Settlements within the Present Limits of the United States, Florida, 1562-1574_, by Woodbury Lowery (New York, 1905).

(D. H.)

AVILES, or SAN NICOLAS DE AVILES (the Roman _Flavionavia_), a seaport of northern Spain, in the province of Oviedo; on the Bay of Aviles, a winding inlet of the Bay of Biscay, 24 m. by rail W. of Gijon. Pop. (1900) 12,763. Aviles is a picturesque and old-fashioned town, containing several ancient palaces and Gothic churches. The bay, which is crossed by a fine bridge at its narrow landward extremity, is the headquarters of a fishing fleet, and a port of call for many coasting vessels. Coal from the Oviedo mines is exported coastwise, and in 1904 the shipments from Aviles for the first time exceeded those from Gijon, reaching a total of more than 290,000 tons. Glass and coarse linen and woollen stuffs are manufactured; and there are valuable stone quarries in the neighbourhood.

AVIZANDUM (from Late Lat. _avizare_, to consider), a Scots law term; the judge "makes avizandum with a cause," _i.e._ takes time to consider his judgment.

AVLONA (anc. _Aulon_; Ital. _Valona_; Alb. _Vliona_), a town and seaport of Albania, Turkey, in the vilayet of Iannina. Pop. (1900) about 6000. Avlona occupies an eminence near the Gulf of Avlona, an inlet of the Adriatic, almost surrounded by mountains. The port is the best on the Albanian coast, and the nearest to Italy. It is protected by the island of Saseno, the ancient Saso, and by Cape Glossa, the northernmost headland of the Acroceraunian mountains. It is regularly visited by steamers from Trieste, Fiume, Brindisi, and other Austro-Hungarian and Italian ports, as well as by many small Greek and Turkish coasters. The cable and telegraph line from Otranto, in Italy, to Constantinople, has an important station here. The town is about 1-1/2 m. from the sea, and has rather a pleasant appearance with its minarets and its palace, surrounded with gardens and olive-groves. Valonia, a material largely used by tanners, is the pericarp of an acorn obtained in the neighbouring oak-woods, and derives its name from Valona. The surrounding district is mainly agricultural and pastoral, producing oats, maize, cotton, olive oil, cattle, sheep, skins, hides and butter. All these commodities are exported in considerable quantities, besides bitumen, which is obtained from a mine worked by a French [v.03 p.0066] company. The imports are woollen and cotton piece-goods, metals and petroleum.

Avlona played an important part in the wars between the Normans and the Byzantines, during the 11th and 12th centuries. In 1464 it was taken by the Ottomans; and after being in Venetian possession in 1690, was restored to them in 1691. In 1851 it suffered severely from an earthquake.

AVOCA, or OVOCA, VALE OF, a mountain glen of county Wicklow, Ireland, in the south-eastern part of the county, formed by the junction of the small rivers Avonmore and Avonbeg, which, rising in the central highlands of the county, form with their united waters the Ovoca river, flowing south and south-east to the Irish Sea at Arklow. The vale would doubtless rank only as one among the many beautiful glens of the district, but that it has obtained a lasting celebrity through one of the _Irish Melodies_ of the poet Thomas Moore, in which its praises are sung. It is through this song that the form "Avoca" is most familiar, although the name is locally spelt "Ovoca." The glen is narrow and densely wooded. Its beauty is somewhat marred by the presence of lead and copper mines, and by the main line of the Dublin & South Eastern railway, on which Ovoca station, midway in the vale, is 42-3/4 m. south of Dublin. Of the two "meetings of the waters" (the upper, of the Avonmore and Avonbeg, and the lower, of the Aughrim with the Ovoca) the upper, near the fine seat of Castle Howard, is that which inspired the poet. At Avondale, above the upper "meeting," by the Avonmore, Charles Stewart Parnell was born.

AVOCADO PEAR, the fruit of the tree _Persea gratissima_, which grows in the West Indies and elsewhere; the flesh is of a soft and buttery consistency and highly esteemed. The name _avocado_, the Spanish for "advocate," is a sound-substitute for the Aztec _ahuacatl_; it is also corrupted into "alligator-pear." _Avocato_, _avigato_, _abbogada_ are variants.

AVOGADRO, AMEDEO, CONTE DI QUAREGNA (1776-1856), Italian physicist, was born at Turin on the 9th of June 1776, and died there on the 9th of July 1856. He was for many years professor of higher physics in Turin University. He published many physical memoirs on electricity, the dilatation of liquids by heat, specific heats, capillary attraction, atomic volumes &c. as well as a treatise in 4 volumes on _Fisica di corpi ponderabili_ (1837-1841). But he is chiefly remembered for his "Essai d'une maniere de determiner les masses relatives des molecules elementaires des corps, et les proportions selon lesquelles elles entrent dans les combinaisons" (_Journ. de Phys._, 1811), in which he enunciated the hypothesis known by his name (Avogadro's rule) that under the same conditions of temperature and pressure equal volumes of all gases contain the same number of smallest particles or molecules, whether those particles consist of single atoms or are composed of two or more atoms of the same or different kinds.

AVOIDANCE (from "avoid," properly to make empty or void, in current usage, to keep away from, to shun; the word "avoid" is adapted from the O. Fr. _esvuidier_ or _evider_, to empty out, _voide_, modern _vide_, empty, connected with Lat. _vacuus_), the action of making empty, void or null, hence, in law, invalidation, annulment (see CONFESSION AND AVOIDANCE); also the becoming void or vacant, hence in ecclesiastical law a term signifying the vacancy of a benefice--that it is _void_ of an incumbent. In general use, the word means the action of keeping away from anything, shunning or avoiding.

AVOIRDUPOIS, or AVERDUPOIS (from the French _avoir de pois_, goods of weight), the name of a system of weights used in Great Britain and America for all commodities except the precious metals, gems and medicines. The foundation of the system is the grain. A cubic inch of water weighs 252.458 grains. Of this grain 7000 now (see WEIGHTS AND MEASURES) make a pound avoirdupois. This pound is divided into 16 oz., and these ounces into 16 drachms.

_Avoirdupois Weight._

Drachm, 16=ounce, 16=pound, 14=stone 2=quarter, 4=hundred, 20=ton.
27.3 grains 437.5 7000 98,000 196,000 grs 112 lb 2240 lb.

AVON, the name of several rivers in England and elsewhere. The word is Celtic, appearing in Welsh (very frequently) as _afon_, in Manx as _aon_, and in Gaelic as _abhuinn_ (pronounced _avain_), and is radically identical with the Sanskrit _ap_, water, and the Lat. _aqua_ and _amnis_. The root appears more or less disguised in a vast number of river names all over the Celtic area in Europe. Thus, besides such forms as _Evan_, _Aune_, _Anne_, _Ive_, _Auney_, _Inney,_ &c., in the British Islands, _Aff_, _Aven_, _Avon_, _Aune_ appear in Brittany and elsewhere in France, _Avenza_ and _Avens_ in Italy, _Avia_ in Portugal, and _Avono_ in Spain; while the terminal syllable of a large proportion of the Latinized names of French rivers, such as the _Sequana_, the _Matrona_ and the _Garumna_, seems originally to have been the same word. The names Punj_ab_, Do_ab_, &c., show the root in a clearer shape.

In England the following are the principal rivers of this name.

1. The EAST or HAMPSHIRE AVON rises in Wiltshire south of Marlborough, and watering the Vale of Pewsey collects feeders from the high downs between Marlborough and Devizes. Breaching the high ground of Salisbury Plain, it passes Amesbury, and following a very sinuous course reaches Salisbury. Here it receives on the east bank the waters of the Bourne, and on the west those of the Wylye. With a more direct course, and in a widening, fertile valley it continues past Downton, Fordingbridge and Ringwood, skirting the New Forest on the west, to Christchurch, where it receives the Stour from the west, and 2-1/2 m. lower enters the English Channel through the broad but narrow-mouthed Christchurch harbour. The length, excluding lesser sinuosities, is about 60 m., Salisbury being 35 m. above the mouth. The total fall is rather over 500 ft., and that from Salisbury about 140 ft. The river is of no commercial value for navigation. It abounds in loach, and there are valuable salmon fisheries. The drainage area is 1132 sq. m.

2. The LOWER or BRISTOL AVON rises on the eastern slope of the Cotteswold Hills in Gloucestershire, collecting the waters of several streams south of Tetbury and east of Malmesbury. It flows east and south in a wide curve, through a broad upper valley past Chippenham and Melksham, after which it turns abruptly west to Bradford-on-Avon, receives the waters of the Frome from the south, and enters the beautiful narrow valley in which lie Bath and Bristol. Below Bristol the valley becomes the Clifton Gorge, famous for its wooded cliffs and for the Clifton (_q.v._) suspension bridge which bestrides it. The cliffs and woods have been so far disfigured by quarries that public feeling was aroused, and in 1904 an "Avon Gorge Committee" was appointed to report to the corporation of Bristol on the possibility of preserving the beauties of the locality. The Avon finally enters the estuary of the Severn at Avonmouth, though it can hardly be reckoned as a tributary of that river. From Bristol downward the river is one of the most important commercial waterways in England, as giving access to that great port. The Kennet and Avon Canal, between Reading and the Avon, follows the river closely from Bradford down to Bath, where it enters it by a descent of seven locks. The length of the river, excluding minor sinuosities, is about 75 m., the distance from Bradford to Bath being 10 m., thence to Bristol 12 m., and thence to the mouth 8 m. The total fall is between 500 and 600 ft., but it is only 235 ft. from Malmesbury. The drainage area is 891 sq. miles.

3. The UPPER AVON, also called the Warwickshire, and sometimes the "Shakespeare" Avon from its associations with the poet's town of Stratford on its banks, is an eastern tributary of the Severn. It rises near Naseby in Northamptonshire, and, with a course of about 100 m. joins the Severn immediately below Tewkesbury in Gloucestershire. Its early course is south-westerly to Rugby, thereafter it runs west and south-west to Warwick, receiving the Leam on the east. Its general direction thereafter remains south-westerly, and it flows past Stratford-on-Avon, receives the Stour on the south and the Arrow on the north and thence past Evesham and Pershore to Tewkesbury. The valley is always broad, and especially from Warwick downward, through the Vale of Evesham, the scenery is very beautiful, the rich valley being flanked by the bold Cotteswold Hills on [v.03 p.0067] the south and by the wooded slopes of the Arden district of Warwickshire on the north. The view of Warwick Castle, rising from the wooded banks of the river, is unsurpassed, and the positions of Stratford and Evesham are admirable. The river is locked, and carries a small trade up to Evesham, 28 m. from Tewkesbury; the locks from Evesham upward to Stratford (17 m.) are decayed, but the weirs, and mill-dams still higher, afford many navigable reaches to pleasure boats. The total fall of the river is about 500 ft.; from Rugby about 230 ft., and from Warwick 120 ft. The river abounds in coarse fish.

Among other occurrences of the name of Avon in Great Britain there may be noted--in England, a stream flowing south-east from Dartmoor in Devonshire to the English Channel; in South Wales, the stream which has its mouth at Aberavon in Glamorganshire; in Scotland, tributaries of the Clyde, the Spey and the Forth.

AVONIAN, in geology, the name proposed by Dr A. Vaughan in 1905 (_Q.J.G.S._ vol. lxi. p. 264) for the rocks of Lower Carboniferous age in the Avon gorge at Bristol. The Avonian stage appears to embrace precisely the same rocks and fossil-zones as the earlier designation "Dinantien" (see CARBONIFEROUS SYSTEM); but its substages, being founded upon different local conditions and a different interpretation of the zonal fossils, do not correspond exactly with those of the French and Belgian geologists.

Substages. ZONES. Substages.

{ Kidwellian { _Dibunophyllum_ } }
{ { _Seminula_ } Viseen }
Avonian { } } Dinantien
{ { _Syringothyris_ } }
{ Clevedonian { }
{ { _Zaphrentis_ } Tournaisien }
{ { _Cleistopora_ } }

The upper Avonian (Kidwellian) is well developed about Kidwelly in Carmarthenshire. The lower substage (Clevedonian) is well displayed near Clevedon in Somerset.

See A. Vaughan, "The Carboniferous Limestone Series (Avonian) of the Avon Gorge," _Proc. Bristol Naturalists' Soc._, 4th series, vol. i. pt. 2, 1906, pp. 74-168 (many plates); and T. F. Sibley, "On the Carboniferous Limestone (Avonian) of the Mendip area (Somerset)," _Q.J.G.S._ vol. lxii., 1906, pp. 324-380 (plates).

(J. A. H.)

AVONMORE, BARRY YELVERTON, 1ST VISCOUNT (1736-1805), Irish judge, was born in 1736. He was the eldest son of Frank Yelverton of Blackwater, Co. Cork. Educated at Trinity College, Dublin, he was for some years an assistant master under Andrew Buck in the Hibernian Academy. In 1761 he married Miss Mary Nugent, a lady of some fortune, and was then enabled to read for the bar. He was called in 1764, his success was rapid, and he took silk eight years afterwards. He sat in the Irish parliament as member successively for the boroughs of Donegal and Carrickfergus, becoming attorney-general in 1782, but was elevated to the bench as chief baron of the exchequer in 1783. He was created (Irish) Baron Avonmore in 1795, and in 1800 (Irish) viscount. Among his colleagues at the Irish bar Yelverton was a popular and charming companion. Of insignificant appearance, he owed his early successes to his remarkable eloquence, which made a great impression on his contemporaries; as a judge, he was inclined to take the view of the advocate rather than that of the impartial lawyer. He gave his support to Grattan and the Whigs during the greater part of his parliamentary career, but in his latter days became identified with the court party and voted for the union, for which his viscounty was a reward. He had three sons and one daughter, and the title has descended in the family.

AVRANCHES, a town of north-western France, capital of an arrondissement in the department of Manche, 87 m. S. of Cherbourg on the Western railway. Pop. (1906) 7186. It stands on a wooded hill, its botanical gardens commanding a fine view westward of the bay and rock of St Michel. At the foot of the hill flows the river See, which at high tide is navigable from the sea. The town is surrounded by avenues, which occupy the site of the ancient ramparts, remains of which are to be seen on the north side. Avranches was from 511 to 1790 a bishop's see, held at the end of the 17th century by the scholar Daniel Huet; and its cathedral, destroyed as insecure in the time of the first French Revolution, was the finest in Normandy. Its site is now occupied by an open square, one stone remaining to mark the spot where Henry II. of England received absolution for the murder of Thomas Becket. The churches of Notre-Dame des Champs and St Saturnin are modern buildings in the Gothic style. The ancient episcopal palace is now used as a court of justice; a public library is kept in the hotel de ville. In the public gardens there is a statue of General Jean Marie Valhubert, killed at Austerlitz. Avranches is seat of a sub-prefect and has a tribunal of first instance and a communal college. Leather-dressing is the chief industry; steam-sawing, brewing and dyeing are also carried on, and horticulture flourishes in the environs. Trade is in cider, cattle, butter, flowers and fruit, and there are salmon and other fisheries.

Avranches, an important military station of the Romans, was in the middle ages chief place of a county of the duchy of Normandy. It sustained several sieges, the most noteworthy of which, in 1591, was the result of its opposition to Henry IV. In 1639 Avranches was the focus of the peasant revolt against the salt-tax, known as the revolt of the Nu-pieds.

AWADIA and FADNIA, two small nomad tribes of pure Arab blood living in the Bayuda desert, Anglo-Egyptian Sudan, between the wells of Jakdul and Metemma. They are often incorrectly classed as Ja'alin. They own numbers of horses and cattle, the former of the black Dongola breed. At the battle of Abu Klea (17th of January 1885) they were conspicuous for their courage in riding against the British square.

See _Anglo-Egyptian Sudan_, edited by Count Gleichen (London, 1905).

AWAJI, an island belonging to Japan, situated at the eastern entrance of the Inland Sea, having a length of 32 m., an extreme breadth of 16 m., and an area of 218 sq. m., with a population of about 190,000. It is separated on the south from the island of Shikoku by the Naruto channel, through which, in certain conditions of the tide, a remarkable torrential current is set up. The island is celebrated for its exquisite scenery, and also for the fact that it is traditionally reputed to have been the first of the Japanese islands created by the deities Izanagi and Izanami. The loftiest peak is Yuruuba-yama (1998 ft.), the most picturesque Sen-zan (1519 ft.). Awaji is noted for a peculiar manufacture of pottery.

AWARD (from O. Fr. _ewart_, or _esguart_, cf. "reward"), the decision of an arbitrator. (See ARBITRATION.)

AWE, LOCH, the longest freshwater lake in Scotland, situated in mid-Argyllshire, 116 ft. above the sea, with an area of nearly 16 sq. m. It has a N.E. to S.W. direction and is fully 23 m. long from Kilchurn Castle to Ford, its breadth varying from 1/3 of a mile to 3 m. at its upper end, where it takes the shape of a crescent, one arm of which runs towards Glen Orchy, the other to the point where the river Awe leaves the lake. The two ends of the loch are wholly dissimilar in character, the scenery of the upper extremity being majestic, while that of the lower half is pastoral and tame. Of its numerous islands the best-known is Inishail, containing ruins of a church and convent, which was suppressed at the Reformation. At the extreme north-eastern end of the lake, on an islet which, when the water is low, becomes part of the mainland, stand the imposing ruins of Kilchurn Castle. Its romantic surroundings have made this castle a favourite subject of the landscape painter. Dalmally, about 2 m. from the loch, is one of the pleasantest villages in the Highlands and has a great vogue in midsummer. The river Awe, issuing from the north-western horn of the loch, affords excellent trout and salmon fishing.

AWL (O. Eng. _ael_; at one time spelt _nawl_ by a confusion with the indefinite article before it), a small hand-tool for piercing holes.

AXE (O. Eng. _aex_; a word common, in different forms, in the Teutonic languages, and akin to the Greek [Greek: axine]; the _New English Dictionary_ prefers the spelling "ax"), a tool or weapon, taking various shapes, but, when not compounded with some distinguishing word (_e.g._ in "pick-axe"), generally formed [v.03 p.0068] by an edged head fixed upon a handle for striking. A "hatchet" is a small sort of axe.

AXHOLME, an island in the north-west part of Lincolnshire, England, lying between the rivers Trent, Idle and Don, and isolated by drainage channels connected with these rivers. It consists mainly of a plateau of slight elevation, rarely exceeding 100 ft., and comprises the parishes of Althorpe, Belton, Epworth, Haxey, Luddington, Owston and Crowle; the total area being about 47,000 acres. At a very early period it would appear to have been covered with forest; but this having been in great measure destroyed, it became in great part a swamp. In 1627 King Charles I., who was lord of the island, entered into a contract with Cornelius Vermuyden, a Dutchman, for reclaiming the meres and marshes, and rendering them fit for tillage. This undertaking led to the introduction of a large number of Flemish workmen, who settled in the district, and, in spite of the violent measures adopted by the English peasantry to expel them, retained their ground in sufficient numbers to affect the physical appearance and the accent of the inhabitants to this day. The principal towns in the isle are Crowle (pop. 2769) and Epworth. The Axholme joint light railway runs north and south through the isle, connecting Goole with Haxey junction; and the Great Northern, Great Eastern and Great Central lines also afford communications. The land is extremely fertile. The name, properly Axeyholm (cf. Haxey), is hybrid, _Ax_ being the Celtic _uisg_, water; _ey_ the Anglo-Saxon for island; and _holm_ the Norse word with the same signification.

AXILE, or AXIAL, a term (= related to the axis) used technically in science; in botany an embryo is called axile when it has the same direction as the axis of the seed.

AXINITE, a mineral consisting of a complex aluminium and calcium boro-silicate with a small amount of basic hydrogen; the calcium is partly replaced in varying amounts by ferrous iron and manganese, and the aluminium by ferric iron: the formula is HCa_3BAl_2(SiO_4)_4. The mineral was named (from [Greek: axine], an axe) by R. J. Hauy in 1799, on account of the characteristic thin wedge-like form of its anorthic crystals. The colour is usually clove-brown, but rarely it has a violet tinge (on this account the mineral was named yanolite, meaning violet stone, by J. C. Delametherie in 1792). The best specimens are afforded by the beautifully developed transparent glassy crystals, found with albite, prehnite and quartz, in a zone of amphibolite and chlorite-schists at Le Bourg d'Oisans in Dauphine. It is found in the greenstone and hornblende-schists of Batallack Head near St Just in Cornwall, and in diabase in the Harz; and small ones in Maine and in Northampton county, Pennsylvania, U.S.A. Large crystals have also been found in Japan. In its occurrence in basic rather than in acid eruptive rocks, axinite differs from the boro-silicate tourmaline, which is usually found in granite. The specific gravity is 3.28. The hardness of 6 1/2-7, combined with the colour and transparency, renders axinite applicable for use as a gemstone, the Dauphine crystals being occasionally cut for this purpose.

(L. J. S.)

AXIOM (Gr. [Greek: axioma]), a general proposition or principle accepted as self-evident, either absolutely or within a particular sphere of thought. Each special science has its own axioms (cf. the Aristotelian [Greek: archai], "first principles") which, however, are sometimes susceptible of proof in another wider science. The Greek word was probably confined by Plato to mathematical axioms, but Aristotle (_Anal. Post._ i. 2) gave it also the wider significance of the ultimate principles of thought which are behind all special sciences (_e.g._ the principle of contradiction). These are apprehended solely by the mind, which may, however, be led to them by an inductive process. After Aristotle, the term was used by the Stoics and the school of Ramus for a proposition simply, and Bacon (_Nov. Organ._ i. 7) used it of any general proposition. The word was reintroduced in modern philosophy probably by Rene Descartes (or by his followers) who, in the search for a definite self-evident principle as the basis of a new philosophy, naturally turned to the familiar science of mathematics. The axiom of Cartesianism is, therefore, the _Cogito ergo sum_. Kant still further narrowed the meaning to include only self-evident (intuitive) synthetic propositions, _i.e._ of space and time. The nature of axiomatic certainty is part of the fundamental problem of logic and metaphysics. Those who deny the possibility of all non-empirical knowledge naturally hold that every axiom is ultimately based on observation. For the Euclidian axioms see GEOMETRY.

AXIS (Lat. for "axle"), a word having the same meaning as axle, and also used with many extensions of this primary meaning. It denotes the imaginary line about which a body or system of bodies rotates, or a line about which a body or action is symmetrically disposed. In geometry, and in geometrical crystallography, the term denotes a line which serves to aid the orientation of a figure. In anatomy, it is, among other uses, applied to the second cervical vertebra, and in botany it means the stem.

AXLE (in Mid. Eng. _axel-tre_, from O. Norweg. _oxull-tre_, cognate with the O. Eng. _aexe_ or _eaxe_, and connected with Sansk. _aksha_, Gr. [Greek: axon], and Lat. _axis_), the pin or spindle on which a wheel turns. In carriages the axle-tree is the bar on which the wheels are mounted, the axles being strictly its thinner rounded prolongations on which they actually turn. The pins which pass through the ends of the axles and keep the wheels from slipping off are known as axle-pins or "linch-pins," "linch" being a corruption, due to confusion with "link," of the Old English word for "axle," _lynis_, cf. Ger. _Luense_.

AX-LES-THERMES, a watering place of south-western France, in the department of Ariege, at the confluence of the Ariege with three tributaries, 26 m. S.S.E. of Foix by rail. Pop. (1906) 1179. Ax (Aquae), situated at a height of 2300 ft., is well known for its warm sulphur springs (77deg-172deg F.), of which there are about sixty. The waters, which were used by the Romans, are efficacious in the treatment of rheumatism, skin diseases and other maladies.

AXMINSTER, a market-town in the Honiton parliamentary division of Devonshire, England, on the river Axe, 27 m. E. by N. of Exeter by the London & South-Western railway. Pop. (1901) 2906. The minster, dedicated to St Mary the Virgin, illustrates every style of architecture from Norman to Perpendicular. There are in the chancel two freestone effigies, perhaps of the 14th century, besides three sedilia, and a piscina under arches. Axminster was long celebrated for the admirable quality of its carpets, which were woven by hand, like tapestry. Their manufacture was established in 1755. Their name is preserved, but since the seat of this industry was removed to Wilton near Salisbury, the inhabitants of Axminster have found employment in brush factories, corn mills, timber yards and an iron foundry. Cloth, drugget, cotton, leather, gloves and tapes are also made. Coaxdon House, the birthplace in 1602 of Sir Symonds d'Ewes, the Puritan historian, is about 2 m. distant, and was formerly known as St Calyst.

Axminster (Axemystre) derives its name from the river Axe and from the old abbey church or minster said to have been built by King Aethelstan. The situation of Axminster at the intersection of the two great ancient roads, Iknield Street and the Fosse Way, and also the numerous earthworks and hill-fortresses in the neighbourhood indicate a very early settlement. There is a tradition that the battle of Brunanburh was fought in the valley of the Axe, and that the bodies of the Danish princes who perished in action were buried in Axminster church. According to Domesday, Axminster was held by the king. In 1246 Reginald de Mohun, then lord of the manor, founded a Cistercian abbey at Newenham within the parish of Axminster, granting it a Saturday market and a fair on Midsummer day, and the next year made over to the monks from Beaulieu the manor and hundred of Axminster. The abbey was dissolved in 1539. The midsummer fair established by Reginald de Mohun is still held.

See _Victoria County History--Devon_; James Davidson, _British and Roman Remains in the Vicinity of Axminster_ (London, 1833).

AXOLOTL, the Mexican name given to larvae salamanders of the genus _Amblystoma_. It required the extraordinary acumen of the great Cuvier at once to recognize, when the first specimens [v.03 p.0069] of the _Gyrinus edulis_ or _Axolotl_ of Mexico were brought to him by Humboldt in the beginning of the 19th century, that these Batrachians were not really related to the Perennibranchiates, such as _Siren_ and _Proteus_, with which he was well acquainted, but represented the larval form of some air-breathing salamander. Little heed was paid to his opinion by most systematists, and when, more than half a century later, the axolotl was found to breed in its branchiferous condition, the question seemed to be settled once for all against him, and the genus _Siredon_, as it was called by J. Wagler, was unanimously maintained and placed among the permanent gill-breathers.

It seemed impossible to admit that an animal which lives for years without losing its gills, and is able to propagate in that state, could be anything but a perfect form. And yet subsequent discoveries, which followed in rapid succession, have established that _Siredon_ is but the larval form of the salamander _Amblystoma_, a genus long known from various parts of North America; and Cuvier's conclusions now read much better than they did half a century after they were published. Before reviewing the history of these discoveries, it is desirable to say a few words of the characters of the axolotl (larval form) and of the _Amblystoma_ (perfect or imago form).

The axolotl has been known to the Mexicans from the remotest times, as an article of food regularly brought from neighbouring lakes to the Mexico market, its flesh being agreeable and wholesome. Francisco Hernandez (1514-1578) has alluded to it as _Gyrinus edulis_ or _atolocatl_, and as _lusus aquarum_, _piscis ludicrus_, or _axolotl_, which latter name has remained in use, in Mexico and elsewhere, to the present day. But for its large size--it grows to a length of eleven inches--it is a nearly exact image of the British newt larvae. It has the same moderately long, plump body, with a low dorsal crest, the continuation of the membrane bordering the strongly compressed tail; a large thick head with small eyes without lids and with a large pendent upper lip; two pairs of well-developed limbs, with free digits; and above all, as the most characteristic feature, three large appendages on each side of the back of the head, fringed with filaments which, in their fullest development, remind one of black ostrich feathers. These are the external gills, through which the animal breathes the oxygen dissolved in the water. The jaws are provided with small teeth in several rows, and there is an elongate patch of further teeth on each side of the front of the palate (inserted on the vomerine and palatine bones). The colour is blackish, or of a dark olive-grey or brownish grey with round black spots or dots.

The genus _Amblystoma_ was established by J. J. Tschudi in 1838 for various salamanders from North America, which had previously been described as _Lacerta_ or _Salamandra_, and which, so far as general appearance is concerned, differ little from the European salamanders. The body is smooth and shiny, with vertical grooves on the sides, the tail is but feebly compressed, the eye is moderately large and provided with movable lids, and the upper lip is nearly straight. But the dentition of the palate is very different; the small teeth, which are in a single row, as in the jaws, form a long transverse, continuous or interrupted series behind the inner nares or choanae. The animal leaves the water after completing its metamorphosis, the last stage of which is marked by the loss of the gills. One of the largest and most widely distributed species of this genus, which includes about twenty, is the _Amblystoma tigrinum_, an inhabitant of both the east and west of the United States and of a considerable part of the cooler parts of Mexico. It varies much in colour, but it may be described as usually brown or blackish, with more or less numerous yellow spots, sometimes arranged in transverse bands. It rarely exceeds a length of nine inches. This is the _Amblystoma_ into which the axolotl has been ascertained to transform. It is generally admitted that the axolotls which were kept alive in Europe and were particularly abundant between 1870 and 1880 are all the descendants of a stock bred in Paris and distributed chiefly by dealers, originally, we believe, by the late P. Carbonnier. Close in-breeding without the infusion of new blood is probably the cause of the decrease in their numbers at the present day, specimens being more difficult to procure and fetching much higher prices than they did formerly, at least in England and in France.

The original axolotls, from the vicinity of Mexico City, it is believed, arrived at the Jardin d'Acclimatation, Paris, late in 1863. They were thirty-four in number, among which was an albino, and had been sent to that institution, together with a few other animals, by order of Marshal Forey, who was appointed commander-in-chief of the French expeditionary force to Mexico after the defeat of General Lorencez at Puebla (May 5th, 1862), and returned to France at the end of 1863, after having handed over the command to Marshal (then General) Bazaine. Six specimens (five males and one female) were given by the Societe d'Acclimatation to Professor A. Dumeril, the administrator of the reptile collection of the Jardin des Plantes, the living specimens of which were at that time housed in a very miserable structure, situated at a short distance from the comparatively sumptuous building which was erected some years later and opened to the public in 1874. Soon after their arrival at the Jardin d'Acclimatation, some of the axolotls spawned, but the eggs, not having been removed from the aquarium, were devoured by its occupants. At the same time, in the Jardin des Plantes, the single female axolotl also spawned, twice in succession, and a large number of young were successfully reared. This, it then seemed, solved the often-discussed question of the perennibranchiate nature of these Batrachians. But a year later, the second generation having reached sexual maturity, new broods were produced, and out of these some individuals lost their gills and dorsal crest, developed movable eyelids, changed their dentition, and assumed yellow spots,--in fact, took on all the characters of _Amblystoma tigrinum_. However, these transformed salamanders, of which twenty-nine were obtained from 1865 to 1870, did not breed, although their branchiate brethren continued to do so very freely. It was not until 1876 that the axolotl in its _Amblystoma_ state, offspring of several generations of perennibranchiates, was first observed to spawn, and this again took place in the reptile house of the Jardin des Plantes, as reported by Professor E. Blanchard.

The original six specimens received in 1864 at the Jardin des Plantes, which had been carefully kept apart from their progeny, remained in the branchiate condition, and bred eleven times from 1865 to 1868, and, after a period of two years' rest, again in 1870. According to the report of Aug. Dumeril, they and their offspring gave birth to 9000 or 10,000 larvae during that period. So numerous were the axolotls that the Paris Museum was able to distribute to other institutions, as well as to dealers and private individuals, over a thousand examples, which found their way to all parts of Europe, and numberless specimens have been kept in England from 1866 to the present day. The first specimens exhibited in the London Zoological Gardens, in August 1864, were probably part of the original stock received from Mexico by the Societe d'Acclimatation but do not appear to have bred.

"White" axolotls, albinos of a pale flesh colour, with beautiful red gills, have also been kept in great numbers in England and on the continent. They are said to be all descendants of one albino male specimen received in the Paris Museum menagerie in 1866, which, paired with normal specimens in 1867 and 1868, produced numerous white offspring, which by selection have been fixed as a permanent race, without, according to L. Vaillant, showing any tendency to reversion. We are not aware of any but two of these albinos having ever turned into the perfect _Amblystoma_ form, as happened in Paris in 1870, the albinism being retained.