skip to content

Darwin Correspondence Project

Search: contains "10::12"

Darwin Correspondence Project
Search:
10 and 12 in keywords disabled_by_default
Darwin, C. R. in addressee disabled_by_default
Mansfelde, A. S. von in author disabled_by_default
1 Item
Sorted by:  
Page: 1

From A. S. von Mansfelde   17 January 1876

Summary

Proposes an unorthodox theory of generation that explains sex determination and atavism.

Author:  Alexander Siedschlag von Mansfelde
Addressee:  Charles Robert Darwin
Date:  17 Jan 1876
Classmark:  DAR 180: 15
Letter no:  DCP-LETT-10361

Matches: 1 hit

  • 10 But if the ovum weakened by the above mentioned circumstance takes unto itself barely enough of this organized protoplasm, we will find the warehouse, the ovary, still preparing, yet no material being left over to be stored away, the natural stimulus for the erection of the house is wanting, and instead of progressing the work regresses only a trace of the ovary is left. And we have a male Embryo . 11 The quicker therefore the contact of the ovum with the Spermatic fluid, the Stronger is the ovum and in consequence the greater is the amount of protoplasm absorbed and the result always a female offspring. 12  …
Document type
letter (1)
Author
Mansfelde, A. S. vondisabled_by_default
Addressee
Darwin, C. R.disabled_by_default
Correspondent
Date
1876 (1)