Chapter V: Part II: A Five to Ten Mile Set and a Ten to Twenty Mile Set. 63 illus.,

viii + 72 pp.

=Switchboard Measuring Instruments= for Continuous and Polyphase Currents. By =J. C. Connan=. 117 illus., 150 pp., 8vo. (_1908._) 5_s._ net.

=Electric Cables, their Construction and Cost.= By =D. Coyle= and =F. J. O. Howe=. With many diagrams and 216 tables, 466 pp., crown 8vo, leather. (_1909._) 15_s._ net.

=Management of Electrical Machinery.= By =F. B. Crocker= and =S. S. Wheeler=. Eighth edition, 131 illus., 223 pp., crown 8vo. (_New York, 1909._) 4_s._ 6_d._ net.

=Electric Lighting=: A Practical Exposition of the Art. By =F. B. Crocker=. Royal 8vo. (_New York._)

Vol. I. =The Generating Plant.= Sixth edition, 213 illus., 470 pp. (_1904._) 12_s._ 6_d._ net.

Vol. II. _Out of Print._

=The Care and Management of Ignition Accumulators.= By =H. H. U. Cross=. 12 illus., 74 pp., crown 8vo. (S. & C. SERIES, No. 19.) (_1910._) 1_s._ 6_d._ net.

=Elements of Telephony.= By =A. Crotch=. 51 illus., 90 pp., crown 8vo. (S. & C. SERIES, No. 21.) (_1911._) 1_s._ 6_d._ net.

=Elementary Telegraphy and Telephony.= By =Arthur Crotch=. New impression, 238 illus., viii + 223 pp., 8vo. (FINSBURY TECHNICAL MANUAL.) (_1912._) 4_s._ 6_d._ net.

=Electricity and Magnetism in Telephone Maintenance.= By =G. W. Cummings=. 45 illus., 137 pp., 8vo. (_New York, 1908._) 6_s._ 6_d._ net.

=Grouping of Electric Cells.= By =W. F. Dunton=. 4 illus., 50 pp., fcap. 8vo. (_1906._) 1_s._ 6_d._ net.

=Wireless Telegraphy for Intending Operators.= By =C. K. P. Eden=. 16 illus., 80 pp., cr. 8vo. (S. & C. SERIES, No. 24.) (_1913._) 1_s._ 6_d._ net.

=Magnets and Electric Currents.= By Prof. =J. A. Fleming=. Second edition, 136 illus., 417 pp., crown 8vo. (_1902._) 5_s._ net.

=Notes on Design of Small Dynamo.= By =George Halliday=. Second edition, 8 plates, 8vo. (_1895._) 2_s._ 6_d._

=Practical Alternating Currents and Power Transmission.= By =N. Harrison=. 172 illus., 375 pp., crown 8vo. (_New York, 1906._) 10_s._ 6_d._ net.

=Making Wireless Outfits.= By =N. Harrison=. 27 illus., 61 pp., crown 8vo. (S. & C. SERIES, No. 11.) (_New York, 1909._) 1_s._ 6_d._ net.

=Wireless Telephone Construction.= By =N. Harrison=. 43 illus., 73 pp., crown 8vo. (S. & C. SERIES, No. 12.) (_New York, 1909._) 1_s._ 6_d._ net.

=Testing Telegraph Cables.= By Colonel =V. Hoskioer=. Third edition, 11 illus., viii + 75 pp., crown 8vo. (_1889._) 4_s._ 6_d._

=Long Distance Electric Power Transmission.= By =R. W. Hutchinson=. 136 illus., 345 pp., crown 8vo. (_New York, 1907._) 12_s._ 6_d._ net.

=Theory and Practice of Electric Wiring.= By =W. S. Ibbetson=. 119 illus., 366 pp., crown 8vo. (_1909._) 5_s._ net.

=Practical Electrical Engineering for Elementary Students.= By =W. S. Ibbetson=. 61 illus., 155 pp., crown 8vo. (_1910._) 3_s._ 6_d._ net.

=Form of Model General Conditions= recommended by =The Institution of Electrical Engineers= for use in connection with Electrical Contracts. _New edition in preparation._

=Telegraphy for Beginners.= By =W. H. Jones=. 19 illus., 58 pp., crown 8vo. (_New York, 1910._) 2_s._ net.

=A Handbook of Electrical Testing.= By =H. R. Kempe=. Seventh ed., 285 illus., 706 pp., 8vo. (_1908._) 18_s._ net.

=Electromagnets=, their Design and Construction. By =A. N. Mansfield=. 36 illus., 155 pp., 18mo, boards. (_New York, 1901._) 2_s._ net.

=Telephone Construction, Methods and Cost.= By =C. Mayer=. With Appendices on the cost of materials and labour by =J. C. Slippy=. 103 illus., 284 pp., crown 8vo. (_New York, 1908._) 12_s._ 6_d._ net.

=Practical Electrics=: a Universal Handybook on Every Day Electrical Matters. Seventh edition, 126 illus., 135 pp., 8vo. (S. & C. SERIES, No. 13.) (_New York, 1902._) 1_s._ 6_d._ net.

=Wiring Houses for the Electric Light.= By =N. H. Schneider=. 40 illus., 85 pp., crown 8vo. (S. & C. SERIES, No. 25.) (_New York, 1911._) 1_s._ 6_d._ net.

=Induction Coils.= By =N. H. Schneider=. Second edition, 79 illus., 285 pp., crown 8vo. (_New York, 1901._) 4_s._ 6_d._ net.

=How to Install Electric Bells, Annunciators and Alarms.= By =N. H. Schneider=. 59 illus., 63 pp., crown 8vo. (S. & C. SERIES, No. 2.) (_New York, 1905._) 1_s._ 6_d._ net.

=Modern Primary Batteries=, their construction, use and maintenance. By =N. H. Schneider=. 54 illus., 94 pp., crown 8vo. (S. & C. SERIES, No. 1.) (_New York, 1905._) 1_s._ 6_d._ net.

=Practical Engineers' Handbook on the Care and Management of Electric Power Plants.= By =N. H. Schneider=. 203 illus., 274 pp., crown 8vo. (_New York, 1906._) 5_s._ net.

=Electrical Circuits and Diagrams=, illustrated and explained. By =N. H. Schneider=. 8vo. (S. & C. SERIES, Nos. 3 and 4.) (_New York._)

No. 3, Part 1. Second edition. 217 illus., 72 pp. (_New York, 1914._) 1_s._ 6_d._ net.

No. 4, Part 2. 73 pp. (_1909._) 1_s._ 6_d._ net.

=Electrical Instruments and Testing.= By =N. H. Schneider= and =J. Hargrave=. Fourth edition, 133 illus., xxiv + 256 pp., cr. 8vo. (_New York, 1913._) 4_s._ 6_d._ net.

=Experimenting with Induction Coils.= By =N. H. Schneider=. 26 illus., 73 pp., crown 8vo. (S. & C. SERIES, No. 5.) (_New York, 1906._) 1_s._ 6_d._ net.

=Study of Electricity for Beginners.= By =N. H. Schneider=. 54 illus., 88 pp., crown 8vo. (S. & C. SERIES, No. 6.) (_New York, 1905._) 1_s._ 6_d._ net.

=Wiring Houses for the Electric Light=: Low Voltage Battery Systems. 44 illus., 86 pp., crown 8vo. (S. & C. SERIES, No. 25.) (_New York, 1911._) 1_s._ 6_d._ net.

=Low Voltage Electric Lighting with the Storage Battery.= By =N. H. Schneider=. 23 illus., 85 pp., crown 8vo. (S. & C. SERIES, No. 26.) (_New York, 1911._) 1_s._ 6_d._ net.

=Dry Batteries=: how to Make and Use them. By a =Dry Battery Expert=. With additional notes by =N. H. Schneider=. 30 illus., 59 pp., crown 8vo. (S. & C. SERIES, No. 7.) (_New York, 1905._) 1_s._ 6_d._ net.

=The Diseases of Electrical Machinery.= By =E. Schulz=. Edited, with a Preface, by Prof. =S. P. Thompson=. 42 illus., 84 pp., cr. 8vo. (_1904._) 2_s._ net.

=Electricity Simplified.= By =T. O. Sloane=. Thirteenth edition, 29 illus., 158 pp., crown 8vo. (_New York, 1901._) 4_s._ 6_d._ net.

=How to become a Successful Electrician.= By =T. O. Sloane=. Fifteenth edition, 4 illus., 202 pp., crown 8vo. (_New York, 1906._) 4_s._ 6_d._ net.

=Electricity=: its Theory, Sources and Applications. By =J. T. Sprague=. Third edition, 109 illus., 658 pp., crown 8vo. (_1892._) 7_s._ 6_d._ net.

=Telegraphic Connections.= By =C. Thom= and =W. H. Jones=. 20 plates, 59 pp., oblong 8vo. (_New York, 1892._) 3_s._ 6_d._ net.

=Dynamo Electric Machinery.= By Prof. =S. P. Thompson=. Seventh edition, demy 8vo. (FINSBURY TECHNICAL MANUAL.)

Vol. I. CONTINUOUS-CURRENT MACHINERY. With 4 coloured and 30 folding plates, 573 illus., 984 pp. (_1904._) £1 10_s._ net.

Vol. II. ALTERNATING CURRENT MACHINERY. 15 coloured and 24 folding plates, 546 illus., 900 pp. (_1905._) £1 10_s._ net.

=Design of Dynamos= (Continuous Currents). By Prof. =S. P. Thompson=. 4 coloured and 8 folding plates, 243 pp., demy 8vo. (_1903._) 12_s._ net.

=Schedule for Dynamo Design=, issued with the above. 6_d._ each, 4_s._ per doz., or 18_s._ per 100, net.

=Curves of Magnetic Data for Various Materials.= A reprint on transparent paper for office use of Plate I from Dynamo Electric Machinery, and measuring 25 in. by 16 in. 7_d._ net.

=Electrical Tables and Memoranda.= By Prof. =S. P. Thompson=. Second ed., 15 illus. viii. + 136 pp., oblong 64mo (waistcoat-pocket size), leather. (_1913._) 1_s._ net.

Do., do., in celluloid case. 1_s._ 6_d._ net.

=The Electromagnet.= By =C. R. Underhill=. 67 illus., 159 pp., crown 8vo. (_New York, 1903._) 6_s._ 6_d._ net.

=Practical Guide to the Testing of Insulated Wires and Cables.= By =H. L. Webb=. Fifth edition, 38 illus., 118 pp., crown 8vo. (_New York, 1902._) 4_s._ 6_d._ net.

=Wiring Rules.= With Extracts from the Board of Trade Regulations and the Home Office Regulations for Factories and Workshops. Issued by =The Institution of Electrical Engineers=. Sixth edition, 42 pp., 8vo, sewed. (_1911._) 6_d._ net.

FOREIGN EXCHANGE

=English Prices with Russian Equivalents= (at Fourteen Rates of Exchange). English prices per lb., with equivalents in roubles and kopecks per pood. By =A. Adiassewich=. 182 pp., fcap. 32mo. 1_s._ net.

=English Prices with German Equivalents= (at Seven Rates of Exchange). English Prices per lb., with equivalents in marks per kilogramme. By =St. Koczorowski=. 95 pp., fcap. 32mo. 1_s._ net.

=English Prices with Spanish Equivalents.= At Seven Rates of Exchange. English prices per lb., with equivalents in pesetas per kilogramme. By =S. Lambert=. 95 pp., 32mo. 1_s._ net.

=English Prices with French Equivalents= (at Seven Rates of Exchange). English prices per lb. to francs per kilogramme. By =H. P. McCartney=. 97 pp., 32mo. 1_s._ net.

=Principles of Foreign Exchange.= By =E. Matheson=. Fourth edition, 54 pp., 8vo, sewed. (_1905._) 3_d._ net.

GAS AND OIL ENGINES

=The Theory of the Gas Engine.= By =D. Clerk=. Edited by =F. E. Idell=. Third edition, 19 illus., 180 pp., 18mo, boards. (_New York, 1903._) 2_s._ net.

=Electrical Ignition for Internal Combustion Engines.= By =M. A. Codd=. 109 illus., 163 pp., crown 8vo. (_1911._) 3_s._ net.

=The Design and Construction of Oil Engines.= By =A. H. Goldingham=. Third edition, 112 illus., 260 pp., crown 8vo. (_New York, 1910._) 10_s._ 6_d._ net.

=Gas Engine in Principle and Practice.= By =A. H. Goldingham=. New impression, 107 illus., 195 pp., 8vo. (_New York, 1912._) 6_s._ 6_d._ net.

=Practical Handbook on the Care and Management of Gas Engines.= By =G. Lieckfeld=. Third edition, square 16mo. (_New York, 1896._) 3_s._ 6_d._

=Elements of Gas Engine Design.= By =S. A. Moss=. 197 pp., 18mo, boards. (_New York, 1907._) 2_s._ net.

=Gas and Petroleum Engines.= A Manual for Students and Engineers. By Prof. =W. Robinson=. (FINSBURY TECHNICAL MANUAL.) _Third edition in preparation._

GAS LIGHTING

=Transactions of the Institution of Gas Engineers.= Edited by =Walter T. Dunn=, _Secretary_. Published annually. 8vo. 10_s._ 6_d._ net.

=Gas Analyst's Manual.= By =J. Abady=. 102 illus., 576 pp., demy 8vo. (_1902._) 18_s._ net.

=Gas Works=: their Arrangement, Construction, Plant and Machinery. By =F. Colyer=. 31 folding plates, 134 pp., 8vo. (_1884._) 8_s._ 6_d._ net.

=Lighting by Acetylene.= By =F. Dye=. 75 illus., 200 pp., crown 8vo. (_1902._) 6_s._ net.

=A Comparison of the English and French Methods of Ascertaining the Illuminating Power of Coal Gas.= By =A. J. Van Eijndhoven=. Illustrated, crown 8vo. (_1897._) 4_s._

=Gas Lighting and Gas Fitting.= By =W. P. Gerhard=. Third edition, 190 pp., 18mo, boards. (_New York, 1904._) 2_s._ net.

=A Treatise on the Comparative Commercial Values of Gas Coals and Cannels.= By =D. A. Graham=. 3 plates, 100 pp., 8vo. (_1882._) 4_s._ 6_d._

=The Gas Engineer's Laboratory Handbook.= By =J. Hornby=. Third edition, revised, 70 illus., 330 pp., crown 8vo. (_1911._) 6_s._ net.

=Electric Gas Lighting.= By =N. H. Schneider=. 57 illus., 101 pp., crown 8vo. (S. & C. SERIES, No. 8.) (_New York, 1901._) 1_s._ 6_d._ net.

HISTORICAL AND BIOGRAPHICAL

=Extracts from the Private Letters of the late Sir William Fothergill Cooke=, 1836-9, relating to the Invention and Development of the Electric Telegraph; also a Memoir by =Latimer Clark=. Edited by =F. H. Webb=, Sec. Inst. E. E. 8vo. (_1895._) 3_s._

=A Chronology of Inland Navigation= in Great Britain. By =H. R. De Salis=. Crown 8vo. (_1897._) 4_s._ 6_d._

=A History of Electric Telegraphy= to the year 1837. By =J. J. Fahie=. 35 illus., 542 pp., crown 8vo. (_1889._) 2_s._ net.

=Life as an Engineer=: its Lights, Shades, and Prospects. By =J. W. C. Haldane=. New edition, 23 plates, 390 pp., crown 8vo. (_1910._) 5_s._ net.

=A Cornish Giant.= Richard Trevethick, the father of the Locomotive Engine. By =E. K. Harper=. 12 illus., including 2 plates, 60 pp., 8vo, sewed. (_1913._) 1_s._ net.

=Philipp Reis=, Inventor of the Telephone: a Biographical Sketch. By Prof. =S. P. Thompson=. 8vo, cloth. (_1883._) 7_s._ 6_d._

=The Development of the Mercurial Air Pump.= By Prof. =S. P. Thompson=. 43 illus., 37 pp., royal 8vo, sewed. (_1888._) 1_s._ 6_d._

HOROLOGY

=Watch and Clock Maker's Handbook=, Dictionary and Guide. By =F. J. Britten=. Tenth edition, 450 illus., 492 pp., crown 8vo. (_1902._) 5_s._ net.

=The Springing and Adjusting of Watches.= By =F. J. Britten=. 75 illus., 152 pp., crown 8vo. (_1898._) 3_s._ net.

=Prize Essay on the Balance Spring= and its Isochronal Adjustments. By =M. Immisch=. 7 illus., 50 pp., crown 8vo. (_1872._) 2_s._ 6_d._

HYDRAULICS AND HYDRAULIC MACHINERY

(_See also_ =Irrigation= _and_ =Water Supply=.)

=The Suction Caused by Ships= explained in popular language. By =E. S. Bellasis=. 2 plates, 26 pp., 8vo, sewed. (_1912._) 1_s._ net.

=Hydraulics with Working Tables.= By =E. S. Bellasis=. Second edition, 160 illus., xii + 311 pp., 8vo. (_1911._) 12_s._ net.

=Pumps=: Historically, Theoretically and Practically Considered. By =P. R. Björling=. Second edition, 156 illus., 234 pp., crown 8vo. (_1895._) 7_s._ 6_d._

=Pump Details.= By =P. R. Björling=. 278 illus., 211 pp., crown 8vo. (_1892._) 7_s._ 6_d._

=Pumps and Pump Motors=: A Manual for the use of Hydraulic Engineers. By =P. R. Björling=. Two vols., 261 plates, 369 pp., royal 4to. (_1895._) £1 10_s._ net.

=Practical Handbook on Pump Construction.= By =P. R. Björling=. Second ed., new imp., 9 plates, viii + 86 pp., cr. 8vo. (_1912._) 3_s._ 6_d._ net.

=Water or Hydraulic Motors.= By =P. R. Björling=. 206 illus., 287 pp., crown 8vo. (_1903._) 9_s._

=Hydraulic Machinery=, with an Introduction to Hydraulics. By =R. G. Blaine=. Third edition, 307 illus., 468 pp., 8vo. (FINSBURY TECHNICAL MANUAL.) (_1913._) 10_s._ 6_d._ net.

=Practical Hydraulics.= By =T. Box=. Fifteenth edition, 8 plates, 88 pp., crown 8vo. (_1909._) 5_s._ net.

=Pumping and Water Power.= By =F. A. Bradley=. 51 illus., vii + 118 pp., demy 8vo. (_1912._) 4_s._ 6_d._ net.

=Hydraulic, Steam, and Hand Power Lifting and Pressing Machinery.= By =F. Colyer=. Second edition, 88 plates, 211 pp., imperial 8vo. (_1892._) 10_s._ 6_d._ net.

=Pumps and Pumping Machinery.= By =F. Colyer=.

Vol. I. Second edition, 53 plates, 212 pp., 8vo. (_1892._) 10_s._ 6_d._ net.

Vol. II. Second edition, 48 plates, 169 pp., 8vo. (_1900._) 10_s._ 6_d._ net.

=Construction of Horizontal and Vertical Water-wheels.= By =W. Cullen=. Second edition, 12 plates, 4to. (_1871._) 5_s._

=Donaldson's Poncelet Turbine= and Water Pressure Engine and Pump. By =W. Donaldson=. 2 plates, viii + 32 pp., demy 4to. (_1883._) 5_s._

=Principles of Construction and Efficiency of Water-wheels.= By =W. Donaldson=. 13 illus., 94 pp., 8vo. (_1876._) 5_s._

=Practical Hydrostatics and Hydrostatic Formulæ.= By =E. S. Gould=. 27 illus., 114 pp., 18mo, boards. (_New York, 1903._) 2_s._ net.

=Hydraulic and Other Tables= for purposes of Sewerage and Water Supply. By =T. Hennell=. Third edition, 70 pp., crown 8vo. (_1908._) 4_s._ 6_d._ net.

=Tables for Calculating the Discharge of Water= in Pipes for Water and Power Supplies. Indexed at side for ready reference. By =A. E. Silk=. 63 pp., crown 8vo. (_1899._) 5_s._

=Simple Hydraulic Formulæ.= By =T. W. Stone=. 9 plates, 98 pp., crown 8vo. (_1881._) 4_s._

=A B C of Hydrodynamics.= By Lieut.-Col. =R. de Villamil=. 48 illus., xi + 135 pp., demy 8vo. (_1912._) 6_s._ net.

INDUSTRIAL CHEMISTRY AND MANUFACTURES

=Transactions of the American Institute of Chemical Engineers.= Issued annually. 30_s._ net.

=Perfumes and their Preparation.= By =G. W. Askinson=. Translated by =I. Fuest=. Third ed., 32 illus., 312 pp., 8vo. (_New York, 1907._) 12_s._ 6_d._ net.

=Brewing Calculations=, Gauging and Tabulation. By =C. H. Bater=. 340 pp., 64mo, roan, gilt edges. (_1897._) 1_s._ 6_d._ net.

=A Pocket Book for Chemists=, Chemical Manufacturers, Metallurgists, Dyers, Distillers, etc. By =T. Bayley=. Seventh edition, new impression, 550 pp., royal 32mo, roan, gilt edges. (_1912._) 5_s._ net.

=Practical Receipts= for the Manufacturer, the Mechanic, and for Home use. By Dr. =H. R. Berkeley= and =W. M. Walker=. New impression, 250 pp., demy 8vo. (_1912._) 5_s._ net.

=A Treatise on the Manufacture of Soap and Candles=, Lubricants and Glycerine. By =W. L. Carpenter= and =H. Leask=. Second edition, 104 illus., 456 pp., crown 8vo. (_1895._) 12_s._ 6_d._

=A Text Book of Paper Making.= By =C. F. Cross= and =E. J. Bevan=. Third edition, 97 illus., 411 pp., crown 8vo. (_1907._) 12_s._ 6_d._ net.

=C.B.S. Standard Units and Standard Paper Tests.= By =C. F. Cross=, =E. J. Bevan=, =C. Beadle= and =R. W. Sindall=. 25 pp., crown 4to. (_1903._) 2_s._ 6_d._ net.

=Pyrometry.= By =C. R. Darling=. 60 illus., 200 pp., crown 8vo. (_1911._) 5_s._ net.

=Soda Fountain Requisites.= A Practical Receipt Book for Druggists, Chemists, etc. By =G. H. Dubelle=. Third edition, 157 pp., crown 8vo. (_New York, 1905._) 4_s._ 6_d._ net.

=Spices and How to Know Them.= By =W. M. Gibbs=. 47 plates, including 14 in colours, 176 pp., 8vo. (_New York, 1909._) 15_s._ net.

=The Chemistry of Fire= and Fire Prevention. By =H.= and =H. Ingle=. 45 illus., 290 pp., crown 8vo. (_1900._) 9_s._

=Ice-making Machines.= By =M. Ledoux= and others. Sixth edition, 190 pp., 18mo, boards. (_New York, 1906._) 2_s._ net.

=Brewing with Raw Grain.= By =T. W. Lovibond=. 75 pp., crown 8vo. (_1883._) 5_s._

=The Chemistry, Properties, and Tests of Precious Stones.= By =J. Mastin=. 114 pp., fcap. 16mo, limp leather, gilt top. (_1911._) 2_s._ 6_d._ net.

=Sugar, a Handbook for Planters and Refiners.= By the late =J. A. R. Newlands= and =B. E. R. Newlands=. 236 illus., 876 pp., 8vo. (_1909._) £1 5_s._ net.

=Principles of Leather Manufacture.= By Prof. =H. R. Procter=. _Second edition in preparation._

=Leather Industries Laboratory Handbook= of Analytical and Experimental Methods. By =H. R. Procter=. Second edition, 4 plates, 46 illus., 450 pp., 8vo. (_1908._) 18_s._ net.

=Leather Chemists' Pocket Book.= A short compendium of Analytical Methods. By Prof. =H. R. Procter=. Assisted by Dr. =E. Stiasny= and =H. Brumwell=. 4 illus., xiv + 223 pp., 16mo, leather. (_1912._) 5_s._ net.

=Theoretical and Practical Ammonia Refrigeration.= By =I. I. Redwood=. Sixth thousand, 15 illus., 146 pp., square 16mo. (_New York, 1909._) 4_s._ 6_d._ net.

=Breweries and Maltings.= By =G. Scammell= and =F. Colyer=. Second edition, 20 plates, 178 pp., 8vo. (_1880._) 6_s._ net.

=Factory Glazes for Ceramic Engineers.= By =H. Rum-Bellow=. Folio. Series A, Leadless Sanitary Glazes. (_1908._) £2 2_s._ net.

=Spons' Encyclopædia of the Industrial Arts=, Manufactures and Commercial Products. 2 vols. 1,500 illus., 2,100 pp., super royal 8vo. (_1882._) £2 2_s._ net.

=Refrigeration and Ice-making= and Refrigerating Machinery. By =W. H. Wakeman=. 4th ed., 15 illus., 43 pp., 8vo, sewed. (_New York, 1909._) 1_s._ 6_d._ net.

=Tables for the Quantitative Estimation of the Sugars.= By =E. Wein= and =W. Frew=. Crown 8vo. (_1896._) 6_s._

=Handbook of Natural Gas.= By =Henry P. Westcott=, with =Tables= by =F. H. Oliphant=. 156 illus., 529 pp. 8vo. (_New York, 1913._) 17_s._ net.

=The Puering, Bating and Drenching of Skins.= By =J. T. Wood=. 33 illus., xv + 300 pp., 8vo. (_1912._) 12_s._ 6_d._ net.

=Workshop Receipts.= For the use of Manufacturers, Mechanics and Scientific Amateurs. NEW AND THOROUGHLY REVISED EDITION, crown 8vo. (_1909._) 3_s._ each net.

Vol. I. ACETYLENE LIGHTING _to_ DRYING. 223 illus., 532 pp.

Vol. II. DYEING _to_ JAPANNING. 259 illus., 540 pp.

Vol. III. JOINTING PIPES _to_ PUMPS. 256 illus., 528 pp.

Vol. IV. RAINWATER SEPARATORS _to_ WIRE ROPE SPLICING. 321 illus., 540 pp.

=Practical Handbook on the Distillation of Alcohol from Farm Products.= By =F. B. Wright=. Second edition, 60 illus., 271 pp., crown 8vo. (_New York, 1907._) 4_s._ 6_d._ net.

=The Manufacture of Chocolate= and other Cacao Preparations. By =P. Zipperer=. Second edition, 87 illus., 280 pp., royal 8vo. (_1902._) 16_s._ net.

INTEREST TABLES

=The Wide Range Dividend and Interest Calculator=, showing at a glance the Percentage on any sum from One Pound to Ten Thousand Pounds, at any Interest, from 1 per cent. to 12-1/2 per cent., proceeding by 1/4 per cent. By =A. Stevens=. 100 pp., super royal 8vo. 6_s._ net.

Quarter morocco, cloth sides, 7_s._ 6_d._ net.

=The Wide Range Income Tax Calculator=, showing at a glance the Tax on any sum from One Shilling to Thousand Pounds, at the Rate of 9_d._, 1_s._, and 1_s._ 2_d._ in the Pound. By =A. Stevens=. On folding card, imperial 8vo. 1_s._ net.

IRRIGATION

=Irrigation Works.= By =E. S. Bellasis=. 37 illus., viii + 174 pp., 8vo. (_1913._) 8_s._ net.

=Punjab Rivers and Works.= By =E. S. Bellasis=. Second edition, 47 illus., 65 pp., folio. (_1912._) 8_s._ net.

=Irrigation Pocket Book.= By =R. B. Buckley=. Second ed., 80 illus., viii + 475 pp., cr. 8vo, leather, gilt edges. (_1913._) 15_s._ net.

=The Design of Channels for Irrigation and Drainage.= By =R. B. Buckley=. 22 diagrams, 56 pp., crown 8vo. (_1911._) 2_s._ net.

=The Irrigation Works of India.= By =R. B. Buckley=. Second edition, with coloured maps and plans. 336 pp., 4to, cloth. (_1905._) £2 2_s._ net.

=Irrigated India.= By Hon. =Alfred Deakin=. With Map, 322 pp., 8vo. (_1893._) 8_s._ 6_d._

=Indian Storage Reservoirs, with Earthen Dams.= By =W. L. Strange=. Second ed., 16 plates, 59 illus., xxiv + 442 pp., 8vo. (_1913._) 21_s._ net.

=The Irrigation of Mesopotamia.= By Sir =W. Willcocks=. 2 vols., 46 plates, 136 pp. (Text super royal 8vo, plates folio.) (_1911._) £1 net.

=Egyptian Irrigation.= By Sir =W. Willcocks= and =J. I. Craig=. In 2 Vols. Third edition, 81 plates, 183 illus., 900 pp., sup. roy. 8vo. (_1913._) 42_s._ net.

=The Nile Reservoir Dam at Assuân=, and After. By Sir =W. Willcocks=. Second edition, 13 plates, 35 pp., super royal 8vo. (_1903._). 3_s._ net.

=The Assuân Reservoir and Lake Moeris.= By Sir =W. Willcocks=. With text in English, French and Arabic. 5 plates, 116 pp., super royal 8vo. (_1904._) 3_s._ net.

=The Nile in 1904.= By Sir =W. Willcocks=. 30 plates, 200 pp., super royal 8vo. (_1904._) 5_s._ net.

LOGARITHM TABLES

=Aldum's Pocket Folding Mathematical Tables.= Four-figure Logarithms, and Anti-logarithms, Natural Sines, Tangents, Cotangents, Cosines, Chords and Radians for all angles from 1 to 90 degrees. And Decimalizer Table for Weights and Money. On folding card. 4_d._ net. 20 copies, 6_s._ net.

=Tables of Seven-figure Logarithms= of the Natural Numbers from 1 to 108,000. By =C. Babbage=. Stereotype edition, 224 pp., medium 8vo. 5_s._ net.

=Four-Place Tables of Logarithms and Trigonometric Functions.= By =E. V. Huntington=. Ninth thousand, 34 pp., square 8vo, limp buckram, with cut lateral index. (_New York, 1911._) 3_s._ net.

=Short Logarithmic= and other Tables. By =W. C. Unwin=. Fourth edition, small 4to. 3_s._

=Logarithmic Land Measurement.= By =J. Wallace=. 32 pp., royal 8vo. (_1910._) 5_s._ net.

=A B C Five-figure Logarithms with Tables, for Chemists.= By =C. J. Woodward=. Crown 8vo. 2_s._ 6_d._ net.

=A B C Five-figure Logarithms= for general use, with lateral index for ready reference. By =C. J. Woodward=. Second edition, with cut lateral Index, 116 pp., 12mo, limp leather. 3_s._ net.

MARINE ENGINEERING AND NAVAL ARCHITECTURE

=Marine Propellers.= By =S. W. Barnaby=. Fifth edition, 5 plates, 56 illus., 185 pp., demy 8vo. (_1908._) 10_s._ 6_d._ net.

=Marine Engineer's Record Book=: Engines. By =B. C. Bartley=. 8vo, roan. 5_s._ net.

=The Suction Caused by Ships and the Olympic-Hawke Collision.= By =E. S. Bellasis=. 1 chart and 5 illus. in text, 26 pp., 8vo, sewed. (_1912._) 1_s._ net.

=Yachting Hints=, Tables and Memoranda. By =A. C. Franklin=. Waistcoat pocket size, 103 pp., 64mo, roan, gilt edges. 1_s._ net.

=Steamship Coefficients, Speeds and Powers.= By =C. F. A. Fyfe=. 31 plates, 280 pp., fcap. 8vo, leather. (_1907._) 10_s._ 6_d._ net.

=How to Build a Speed Launch.= By =E. W. Graef=. 14 plates, 32 pp., quarto. (_New York, 1903_). 4_s._ 6_d._ net.

=Steamships and Their Machinery=, from first to last. By =J. W. C. Haldane=. 120 illus., 532 pp., 8vo. (_1893._) 15_s._

=Tables for Constructing Ships' Lines.= By =A. Hogg=. Third edition, 3 plates, 20 pp., 8vo, sewed. (_1911._) 3_s._ net.

=Tabulated Weights= of Angle, Tee, Bulb, Round, Square, and Flat Iron and Steel for the use of Naval Architects, Shipbuilders, etc. By =C. H. Jordan=. Sixth edition, 640 pp., royal 32mo, leather, gilt edges. (_1909._) 7_s._ 6_d._ net.

=Particulars of Dry Docks=, Wet Docks, Wharves, etc., on the River Thames. Compiled by =C. H. Jordan=. Second edition, 7 coloured charts, 103 pp., oblong 8vo. (_1904._) 2_s._ 6_d._ net.

=Marine Transport of Petroleum.= By =H. Little=. 66 illus., 263 pp., crown 8vo. (_1890._) 10_s._ 6_d._

=Questions and Answers for Marine Engineers=, with a Practical Treatise on Breakdowns at Sea. By =T. Lucas=. 12 folding plates, 515 pp., gilt edges, crown 8vo. (_New York, 1902._) 8_s._ net.

=How to Build a Motor Launch.= By =C. D. Mower=. 49 illus., 42 pp., 4to. (_New York, 1904_). 4_s._ 6_d._ net.

=Reed's Engineers' Handbook to the Board of Trade Examinations= for certificates of Competency as First and Second Class Engineers. Nineteenth edition, 37 plates, 358 illus., 696 pp., 8vo. 14_s._ net.

=Key to Reed's Handbook.= 7_s._ 6_d._ net.

=Reed's Marine Boilers.= Third edition, 79 illus., 258 pp., crown 8vo. (_1905._) 4_s._ 6_d._ net.

=Reed's Useful Hints to Sea-going Engineers.= Fourth edition, 8 plates, 50 illus., 312 pp., crown 8vo. (_1903._) 3_s._ 6_d._ net.

=How to Build a Three-horse Power Launch Engine.= By =E. W. Roberts=. 14 plates, 66 pp., folio. (_New York, 1901_). 10_s._ 6_d._ net.

MATERIALS

=Practical Treatise on the Strength of Materials.= By =T. Box=. Fourth edition, 27 plates, 536 pp., 8vo. (_1902._) 12_s._ 6_d._ net.

=Solid Bitumens.= By =S. F. Peckham=. 23 illus., 324 pp., 8vo. (_New York, 1909._) £1 1_s._ net.

=Lubricants, Oils and Greases.= By =I. I. Redwood=. 3 plates, ix + 54 pp., 8vo. (_1898._) 6_s._ 6_d._ net.

=Practical Treatise on Mineral Oils= and their By-Products. By =I. I. Redwood=. 76 illus., 336 pp., 8vo. (_1897._) 15_s._

=Silico-Calcareous Sandstones=, or Building Stones from Quartz, Sand and Lime. By =E. Stoffler=. 5 plates, 8vo, sewed. (_1901._) 4_s._ net.

=Proceedings of the Fifth Congress, International Association for Testing Materials.= English edition. 189 illus., 549 pp., 8vo. (_1910._) 18_s._ net.

=Proceedings of the Sixth Congress.= (_1913._) 30_s._ net.

MATHEMATICS

=Imaginary Quantities.= By =M. Argand=. Translated by Prof. =Hardy=. 18mo, boards. (_New York._) 2_s._ net.

=Text-book of Practical Solid Geometry.= By =E. H. de V. Atkinson=. Revised by Major =B. R. Ward=, R.E. Second edition, 17 plates, 134 pp., 8vo. (_1913._) 7_s._ 6_d._

=Quick and Easy Methods of Calculating=, and the Theory and Use of the Slide Rule. By =R. G. Blaine=. Fourth edition, 6 illus., xii + 152 pp., 16mo. (_1912._) 2_s._ 6_d._ net.

=Symbolic Algebra=, or the Algebra of Algebraic Numbers. By =W. Cain=. 12 illus., 131 pp., 18mo, boards. (_New York, 1884._) 2_s._ net.

=Nautical Astronomy.= By =J. H. Colvin=. 127 pp., crown 8vo. (_1901._) 2_s._ 6_d._ net.

=Chemical Problems.= By =J. C. Foye=. Fourth edition, 141 pp., 18mo, boards. (_New York, 1898._) 2_s._ net.

=Primer of the Calculus.= By =E. S. Gould=. Second edition, 24 illus., 122 pp., 18mo, boards. (_New York, 1899._) 2_s._ net.

=Elementary Treatise on the Calculus= for Engineering Students. By =J. Graham=. Fourth edition, 116 illus., xii + 355 pp., cr. 8vo. (_1914._) 5_s._ net.

=Manual of the Slide Rule.= By =F. A. Halsey=. Second edition, 31 illus., 84 pp., 18mo, boards. (_New York, 1901._) 2_s._ net.

=Reform in Chemical and Physical Calculations.= By =C. J. T. Hanssen=. 4to. (_1897._) 6_s._ 6_d._ net.

=Algebra Self-Taught.= By =P. Higgs=. Third edition, 104 pp., crown 8vo. (_1903._) 2_s._ 6_d._

=A Text-book on Graphic Statics.= By =C. W. Malcolm=. 155 illus., 316 pp., 8vo. (_New York, 1909._) 12_s._ 6_d._ net.

=Galvanic Circuit Investigated Mathematically.= By =G. S. Ohm=. Translated by =William Francis=. 269 pp., 18mo, boards. (_New York, 1891._) 2_s._ net.

=Elementary Practical Mathematics.= By =M. T. Ormsby=. Second edition, 128 illus., xii + 410 pp., medium 8vo. (_1911._) 5_s._ net.

=Elements of Graphic Statics.= By =K. Von Ott=. Translated by =G. S. Clarke=. 95 illus., 128 pp., crown 8vo. (_1901._) 5_s._

=Figure of the Earth.= By =F. C. Roberts=. 2 illus., 95 pp., 18mo, boards. (_New York, 1885._) 2_s._ net.

=Arithmetic of Electricity.= By =T. O'C. Sloane=. Thirteenth edition, 5 illus., 162 pp., crown 8vo. (_New York, 1901._) 4_s._ 6_d._ net.

=Graphic Method for Solving certain Questions in Arithmetic or Algebra.= By =G. L. Vose=. Second edition, 28 illus., 62 pp., 18mo, boards. (_New York, 1902._) 2_s._ net.

=Problems in Electricity.= A Graduated Collection comprising all branches of Electrical Science. By =R. Weber=. Translated from the French by =E. A. O'Keefe=. 34 illus., 366 pp., crown 8vo. (_1902._) 7_s._ 6_d._ net.

MECHANICAL ENGINEERING
Steam Engines and Boilers, etc.

=Engineers' Sketch Book of Mechanical Movements.= By =T. W. Barber=. Fifth edition, 3,000 illus., 355 pp., 8vo. (_1906._) 10_s._ 6_d._ net.

=The Repair and Maintenance of Machinery.= By =T. W. Barber=. 417 illus., 476 pp., 8vo. (_1895._) 10_s._ 6_d._

=The Science of Burning Liquid Fuel.= By =William Newton Best=. 100 illus., 159 pp. 8vo. (_1913._) 9_s._ net.

=Practical Treatise on Mill Gearing.= By =T. Box=. Fifth edition, 11 plates, 128 pp., crown 8vo. (_1892._) 7_s._ 6_d._

=The Mechanical Engineers' Price Book.= Edited by =G. Brooks=. 176 pp., pocket size (6-1/2 in. by 3-3/4 in. by 1/2 in. thick), red leather cloth. 4_s._ net.

=Safety Valves.= By =R. H. Buell=. Third edition, 20 illus., 100 pp., 18mo, boards. (_New York, 1898._) 2_s._ net.

=Machine Design.= By Prof. =W. L. Cathcart=.