[HV]. See my Rélat. historique, t. ii. pp. 547–556.
[HW]. Reisen in Britisch Guiana, th. i. s. 441–461.
[HX]. Compare also the older chemical analysis of Boussingault, in the Annales de Chimie et Physique, t. xxxix. 1828, pp. 24–37.
[HY]. Humboldt, in this and other pages of his lecture, addressed, it should be remembered, to the citizens of Berlin, in 1806, evidently alludes to the troubles of the times.—Ed.
[HZ]. Hist., lib. vi., initio.
[IA]. This subject is elaborately discussed in Heeren’s various works.—Ed.
[IB]. Blumenbach, Collectiones suæ Craniorum diversarum gentium, &c., 4to, Götting., 1798–1828.—Ed.
[IC]. Gilbert’s Annalen der Physik, bd. xvi. 1804, s. 394–449.
[ID]. Navarrete, Viages y Descubrimientos que hiciéron por mar los Españoles, t. i. pp. 253, 260; t. iii. pp. 539, 587.
[IE]. Diodor. Sicul., lib. xvii. p. 553 (Rhodom.).