From C. G. Semper 26 April 1877
Summary
Explains why he did not add his photograph to the album presented by German naturalists to CD. Instead he wishes to dedicate to CD his work on the vertebrate-type eyes on the back of some Mollusca. [Enclosed is a MS introduction to this work, Über Sehorgane von Typus der Wirbelthieraugen auf dem Rücken von Schnecken.].
| Author: | Carl Gottfried Semper |
| Addressee: | Charles Robert Darwin |
| Date: | 26 Apr 1877 |
| Classmark: | DAR 177: 137 |
| Letter no: | DCP-LETT-10942 |
From C. G. Semper 13 July 1877
Summary
Sends work on dorsal eyes of Onchidium ["Über Schneckenaugen", Arch. Mikrosk. Anat. 14 (1877): 118–24]. Comments on work.
| Author: | Carl Gottfried Semper |
| Addressee: | Charles Robert Darwin |
| Date: | 13 July 1877 |
| Classmark: | DAR 177: 138 |
| Letter no: | DCP-LETT-11050 |
