[109] Von Humboldt, Nouvelle Espagne, edit. 2, vol. ii. p. 451; Essai sur la Géographie des Plantes, p. 29.

[110] At that epoch Virginia was not distinguished from Carolina.

[111] Banks, Trans. Hort. Soc., 1805, vol. i. p. 8.

[112] Gerard, Herbal, 1597, p. 781, with illustration.

[113] Banks, Trans. Hort. Soc., 1805, vol. i. p. 8.

[114] Dunal, Hist. Nat. des Solanum, in 4to.

[115] The plant imported by Sir John Hawkins and Sir Francis Drake was clearly the sweet potato, Sir J. Banks says; whence it results that the questions discussed by Humboldt touching the localities visited by these travellers do not apply to the potato.

[116] De l’Ecluse, Rariarum Plantarum Historiæ, 1601, lib. 4. p. lxxviii.

[117] Targioni-Tozzetti, Lezzioni, ii. p. 10; Cenni Storici sull’ Introduzione di Varie Piante nell’ Agricoltura di Toscana, 1 vol. in 8vo, Florence, 1853, p. 37.

[118] Solanum verrucosum, whose introduction into the neighbourhood of Gex, near Geneva, I mentioned in 1855, has since been abandoned because its tubers are too small, and because it does not, as it was hoped, withstand the potato-fungus.