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86 Agassiz defies anyone to distinguish embryo of Bat, Snake, Bird &c

Agassiz, Louis. 1850. The zoological character of young Mammalia. Proceedings of the American Association for the Advancement of Science 2: 85-89. [CUL-DAR.LIB.PER-U1523] PDF

147 Adams Land Mollusca W. Indies. Few widely distributed, most very local — general Law in Land Mollusca & indeed in all. Bears on dominant forms. & on Alph. De Candolle very widely if widely distributed

Adams, Charles Baker. 1850. Remarks on the distribution of the testaceous mollusca of Jamaica. Proceedings of the American Association for the Advancement of Science 2: 147-48. [CUL-DAR.LIB.PER-U1523] PDF

397. A. Gray on Series of Compositæ at Sandwich— extinct genus is confined to Pacific Coast of America— Illustrates Hookers Rule that when genus confined to group — Each isld. has its own Species, — But is this Hookers rule?

Gray, Asa. 1850. On some plants of the order Compositæ from the Sandwich Islands. Proceedings of the American Association for the Advancement of Science 2: 397-398. [CUL-DAR.LIB.PER-U1523] PDF.

434. Agassiz on many extinct types combining characteristics now separated 435

435. Prophetic types & which are the latter. — 437 Embryonic types

[Agassiz, Louis.] 1850. On the differences between progressive, embryonic, and prophetic types in the succession of organized beings through the whole range og geological times. Proceedings of the American Association for the Advancement of Science 2: 432-38. [CUL-DAR.LIB.PER-U1523] PDF.