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To R. A. Vance   4 December 1877

Summary

Thanks RAV for valuable letter [11232]. CD too ignorant of anatomy to form a decided opinion, but is inclined to attribute spiral folds to reversion and the valves to partial abortion of the fold. Asks RAV to verify by examining lower intestine of an opossum for the structure. If missing he would hesitate to allude to reversion. If RAV can prove the nature of these remnants it would be a conclusion of much interest.

Author:  Charles Robert Darwin
Addressee:  Reuben Aleshire Vance
Date:  4 Dec 1877
Classmark:  Cleveland Health Sciences Library
Letter no:  DCP-LETT-11269

From R. A. Vance   12 November 1877

Summary

Writes of his observations on the "valves of Houston" in the rectum, which he believes to be rudimentary organs.

Author:  Reuben Aleshire Vance
Addressee:  Charles Robert Darwin
Date:  12 Nov 1877
Classmark:  DAR 180: 1
Letter no:  DCP-LETT-11232
Document type
letter (2)
Addressee
Correspondent
Darwin, C. R.[X]
Vance, R. A.[X]
Date
1877
11 (1)
12 (1)
letter