Adolph Eduard GRUBE (1812-1880), Prussian zoologist. - Lot 26

Lot 26
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Adolph Eduard GRUBE (1812-1880), Prussian zoologist. - Lot 26
Adolph Eduard GRUBE (1812-1880), Prussian zoologist. 2 autograph letters signed to Henri Milne-Edwards. 4 pp. in-8. Königsberg and Dorpat, 1843-1845. Address on spine. Beautiful letters about his research on Argyronetes [a species of spider that can live underwater] and Annelids. He thanks him for sending him "research on the circulation of Annelids", and in turn presents him with his work: "the description of Actinia, Echinoderms and Annelids, which I have encountered on the shores of the Mediterranean Sea, and two popular lessons, one on the meetings of Euglena Sanguinea as pond covers and the other on Argyronetes and their way of life. As you can see, Sir, Annelids are no longer the only animals whose natural history I study, although I continue to observe them with particular interest. Argyronetes have tracheae as well as lungs, and the structure of these organs seems to be the same as in Dyodera and Segestra. Another result of my research on Araneids is what I have derived from the anatomy of the vascular system: i.e., the heart of these animals has lateral openings, through which the blood enters, while it exits through arteries branching in the abdomen and cephalothorax. The same thing I proved in scorpions. As far as Annelids are concerned, I have almost always dealt with native species, and I shall continue to collect earthworms next summer to convince myself how many of the thirty-five species Monsieur Dugéo counts in France we possess. However, I have not failed to study - as far as it is possible to do with individuals preserved in wine spirit - the anatomy of foreign and new Annelids, for example the anatomy of the genus Ammotrypene, discovered by Monsieur Rathke on the coast of Norway. You're right, when you say "the need to study the functions of the economy on living organisms", but anatomy seems to me in many cases to be sufficient to ascertain the place that an Annelid should take in the natural series. You will read Mr. Rathne's descriptions of Norwegian Annelids in the next volume of Acta Naturae-curiosorum [...]". In a second letter, he sends him my "memoir on the development of Clepsines, Annelids, which in this regard departs from leeches proper".
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