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Discusses wear and tear due to glaciation and significance of this evidence for dating the glacial period. Mentions views of James Croll and Archibald Geikie on the issue.
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Discusses views of Wallace, H. N. Moseley, and Croll on the mechanics of glacier movement.
Comments on Wallace’s new book [The Malay Archipelago (1869)].
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Asks for a photograph of CL to be used by a society [in Serbia].
Comments on article by Wallace ["Sir Charles Lyell on geological climates and the Origin", Q. Rev. 126 (1869): 359–94].
Has finished new edition of Origin [5th (1869)]
and is back at work on sexual selection [Descent].