Chapter XVII: Section C: , 1912–13, pp. 223–260; reference on p. 249

[31] E. L. Stevenson: Portolan Charts, _Publs. Hispanic Soc. of Amer. No. 82_, New York, 1911, pp. 5–6.

[32] A. E. Nordenskiöld: Periplus: An Essay on the Early History of Charts and Sailing-Directions, transl. by F. A. Bather, Stockholm, 1897, p. 8.

[33] Fridtjof Nansen: In Northern Mists: Arctic Exploration in Early Times, transl. by A. G. Chater, 2 vols., New York, 1911; reference in Vol. 1, p. 38.

[34] _Ibid._, pp. 40–41.

[35] Nansen, In Northern Mists, p. 41.

[36] [E. F.] Jomard: Les monuments de la géographie, ou recueil d’anciennes cartes européennes et orientales ..., Paris, [1842–62], Pl. X, 1.

[37] J. C. Soley: Circulation of the North Atlantic in February and in August [sheet of text with charts on the reverse]. Supplement to the Pilot Chart of the North Atlantic Ocean for 1912, Hydrographic Office, Washington, D. C.

Otto Krümmel: Die nordatlantische Sargassosee, _Petermanns Mitt._, Vol. 37, 1891, pp. 129–141, with map.

Gerhard Schott: Géographie des Atlantischen Ozeans, Hamburg, 1912, pp. 162–164 and 268–269, Pls. 16 and 26.

[38] Krümmel (paper cited in footnote 26) suggests applying the name Sargasso Sea to the area limited by the curve of 5 per cent probability of occurrence on his map (our Fig. 1). This area amounts to 4,500,000 square kilometers, or somewhat less than half the area of Europe. Schott (see footnote 26), p. 140, gives 8,635,000 square kilometers as the area of his natural region Sargasso Sea, which is based not only on the occurrence of gulfweed but also on the prevailing absence of currents and on the relatively high temperature of the water in all depths.--EDIT. NOTE.

[39] T. A. Janvier: In the Sargasso Sea, New York, 1896, p. 26.

[40] _Ibid._, p. 27.

[41] Murray, pp. 140–141.

[42] Soley, column 2, lines 3–5.

[43] Reprint of Hydrographic Information: Questions and Answers, No. 2, June 2, 1910, Hydrographic Office, Washington, D. C., p. 17.

[44] Anecdota Exoniensia: Lives of the Saints, from the Book of Lismore, edited, with a translation, notes, and indices, by Whitley Stokes, Oxford, 1890, p. 252.

[45] T. J. Westropp: Brasil and the Legendary Islands of the North Atlantic: Their History and Fable, _Proc. Royal Irish Acad._, Vol. 30,