[BD] Malay Archipelago, 1869.
[BE] The passage is quoted as given by Schmidt in his Doctrine of Descent, p. 132. Italics are inserted to guide the eye of the reader to the successive stages.
[BF] Referring to organized being.
[BG] Origin of Species, p. 577.
[BH] Doct. of Descent, p. 161-2.
[BI] Origin of Species, 4th ed. p. 143.
[BJ] Doct. of Descent, 162.
[BK] Origin of Species, 4th ed. p. 141.
[BL] It may be well to mention here that the third American edition is from the fifth English edition.
[BM] Origin of Species, 6th ed., p. 289.