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To William Horsfall   8 February 1882


Does not feel that the occurrence of perfect trilobites in the oldest known fossil-bearing rocks is fatal to evolution, as he does not believe these rocks to be contemporaneous with the first appearance of life.

Locomotive spores of some algae are like animals.

Author:  Charles Robert Darwin
Addressee:  William Horsfall
Date:  8 Feb 1882
Classmark:  English Heritage, Down House (Scrapbook)
Letter no:  DCP-LETT-13670

From William Horsfall   7 February 1882


Asks about significance of trilobites for evolution.

Asks if any organism can be designated as animal in one stage and vegetable in another.

Author:  William Horsfall
Addressee:  Charles Robert Darwin
Date:  7 Feb 1882
Classmark:  DAR 145: 359
Letter no:  DCP-LETT-13669
Document type
letter (2)
Darwin, C. R.[X]
Horsfall, William[X]
1882 (2)