[{339}] Origin, Ed. i. p. 316, vi. p. 457.
[{340}] Chapters XI and XII in the Origin, Ed. i., vi. chs. XII and XIII (“On geographical distribution”) show signs of having been originally one, in the fact that one summary serves for both. The geological element is not separately treated there, nor is there a separate section on “how far these laws accord with the theory, &c.”
In the MS. the author has here written in the margin “If same species appear at two spot at once, fatal to my theory.” See Origin, Ed. i. p. 352, vi. p. 499
[{341}] This division of the land into regions does not occur in the Origin, Ed. i.
[{342}] Origin, Ed. i. p. 346, vi. p. 493.
[{343}] Opposite this passage is written “not botanically,” in Sir J. D. Hooker’s hand. The word palms is underlined three times and followed by three exclamation marks. An explanatory note is added in the margin “singular paucity of palms and epiphytes in Trop. Africa compared with Trop. America and Ind. Or.” «=East Indies».
[{344}] This partly corresponds to Origin, Ed. i. p. 337, vi. p. 483.
[{345}] On the general importance of barriers, see Origin, Ed. i. p. 347, vi. p. 494.
[{346}] Origin, Ed. i. p. 348, vi. p. 495.
[{347}] «Note in original.» The same laws seem to govern distribution of species and genera, and individuals in time and space. «See Origin, Ed. i. p. 350, vi. p. 497, also a passage in the last chapter, p. [146].»