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To Alpheus Hyatt   8 May 1881

Summary

Aware that AH thinks CD has done nothing to advance the good cause of the descent theory.

Obliged for gift of AH’s [Tertiary species of Planorbis at Steinheim (1880)].

Author:  Charles Robert Darwin
Addressee:  Alpheus Hyatt
Date:  8 May 1881
Classmark:  Maryland Historical Society (Alpheus Hyatt Papers MS 1007)
Letter no:  DCP-LETT-13151

From Alpheus Hyatt   23 May 1881

Summary

Wishes to correct impression of his attitude towards CD’s contribution: CD has successfully explained how differences arise.

Pleased CD will read his book [Tertiary species of Planorbis at Steinheim (1880)].

Author:  Alpheus Hyatt
Addressee:  Charles Robert Darwin
Date:  23 May 1881
Classmark:  DAR 166: 360
Letter no:  DCP-LETT-13171
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letter (2)
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Darwin, C. R.disabled_by_default
Hyatt, Alpheusdisabled_by_default