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To Henry Johnson   23 December 1871

Summary

Is unable to accept invitation to Shrewsbury. Is grateful for offer of assistance at Wroxeter.

The weight of dry earth cast up by worms is 161/10 tons per acre annually.

Author:  Charles Robert Darwin
Addressee:  Henry Johnson
Date:  23 Dec 1871
Classmark:  Private collection
Letter no:  DCP-LETT-8118A

To Henry Lee   23 December [1871]

Summary

"I have now looked at both lots of specimens, & I think both are the variable L. anatifera.–– I have disarticulated the right-hand scutal valve in both & the umbonal teeth are plain in both … I have hardly any doubt that both are L. anatifera.––"

Author:  Charles Robert Darwin
Addressee:  Henry Lee
Date:  23 Dec [1871]
Classmark:  Kenneth W. Rendell (dealer) (1995)
Letter no:  DCP-LETT-8118B
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Found a new letter? Think we've made a mistake? Have a question? We'd like to hear from you. Email the Darwin Correspondence Project Team or write to us at: Darwin Correspondence Project Cambridge University Library West Road …

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Darwin in letters, 1869: Forward on all fronts

Summary

At the start of 1869, Darwin was hard at work making changes and additions for a fifth edition of  Origin. He may have resented the interruption to his work on sexual selection and human evolution, but he spent forty-six days on the task. Much of the…

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  • … their support for natural selection (see Cittadino 1990, pp. 122–3, 128–30). Nägeli had …
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