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SEMPER, C[arl]. [Gottfried].
Über Sehorgane von Typus der Wirbelthieraugen auf dem Rücken von Schnecken.

Description:
pp. (viii), 45, (i). 5 chromolithographs each with explanatory text leaf. Library cloth rebacked, front joint weak, a faint stamp on the reverse of one of the explanatory text leaves, some foxing throughout, else a very good copy.

*SEMPER [1832-1893], German zoologist, correspondent of Charles Darwin, to whom this study is dedicated. It is part of the series describing his travels in the Phillippines - Reisen im Archipel der Philippinen (Zweiter Theil, Dritter Band), and in it Semper investigated the photoreceptors found in the pulmonate Mollusca, genus Onchidium, concluding that their embryological development provides a phylogenetic link with the vertebrate eye. He was an advocate for direct environmental influence on the anatomy of organisms, disagreeing with Darwin on the matter. His 1880 publication 'Die natürlichen Existenzbedingungen der Thiere' was translated into English for the International Scientific Series, in 1881. He had sent Darwin the German proof sheets.

C. W. Kreidel's Verlag. Wiesbaden.

Date Published: 1877. 4to.

Stock No. 56492

Price: 150.00

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