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From Heinrich Simon   10 December 1881

Summary

Remarks on the sinking of piles of cannonballs in old forts; presumably a consequence of earthworm activity.

Author:  Heinrich Simon
Addressee:  Charles Robert Darwin
Date:  10 Dec 1881
Classmark:  DAR 177: 165
Letter no:  DCP-LETT-13546
Document type
letter (1)
Author
Addressee
Correspondent
Darwin, C. R.[X]
Simon, Heinrich[X]
Date
1881 (1)
letter