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To F. J. Cohn   26 July 1877

Summary

Comments on paper by Francis Darwin ["Glandular hairs of the common teasel", Q. J. Microsc. Sci. 17 (1877): 169–74, 245–72].

Author:  Charles Robert Darwin
Addressee:  Ferdinand Julius Cohn
Date:  26 July 1877
Classmark:  DAR 143: 266
Letter no:  DCP-LETT-11073

To F. J. Cohn   8 August 1877

Summary

Asks permission to publish comments by FJC regarding paper by Francis Darwin [see 11073].

Author:  Charles Robert Darwin
Addressee:  Ferdinand Julius Cohn
Date:  8 Aug 1877
Classmark:  Michael Silverman (dealer) (2003); DAR 143: 267
Letter no:  DCP-LETT-11095

From F. J. Cohn   5 August 1877

Summary

Praises unbroken series of CD’s and Francis [Darwin]’s botanical works.

Confirms FD’s Dipsacus observations. Problem of interpreting microscopic filaments as protoplasm or as inorganic and osmotic artifacts.

Author:  Ferdinand Julius Cohn
Addressee:  Charles Robert Darwin
Date:  5 Aug 1877
Classmark:  DAR 161: 203
Letter no:  DCP-LETT-11093

From F. J. Cohn   [10?] August 1877

Summary

Accepts CD’s offer to publish his letter, confirming Francis Darwin’s observations [see Collected papers 2: 205–7].

H. Hoffmann’s observations on Amanita contractile filaments must be repeated.

Microscopic examination of secretory gland filaments in Dipsacus leafcups. FD’s pseudopod theory of Dipsacus.

Author:  Ferdinand Julius Cohn
Addressee:  Charles Robert Darwin
Date:  [10?] Aug 1877
Classmark:  DAR 161: 204
Letter no:  DCP-LETT-11101

From F. J. Cohn   31 December 1877

Summary

Sends details of H. H. R. Koch’s work on bacteria, including first photographs.

J. S. Burdon Sanderson’s and Koch’s collaboration on systemic fever.

Thinks movement of Francis Darwin’s Dipsacus filaments is an artifact.

Author:  Ferdinand Julius Cohn
Addressee:  Charles Robert Darwin
Date:  31 Dec 1877
Classmark:  DAR 161: 205
Letter no:  DCP-LETT-11298
Document type
letter (5)
Author
Addressee
Correspondent
Cohn, F. J.[X]
Darwin, C. R.[X]
Date
1877
07 (1)
08 (3)
12 (1)
letter