40 PEOCEEDINGS OP THK 



He died on 2lst October, 1897. He was a Fellow of tTie 

 Geological Society and of the Society of Arts, and was elected a 

 Fellow of the Liunean Society 5th on December, 1861. 



EuDOLPH LErcKAUT, whose name is a talisman in zoological 

 circles, and whose work has marked more than one epoch in the 

 history and development of modern zoology, was borii at Helm- 

 stadt in 1823. His father was a bookseller in that town, a 

 former seat of one of the prominent Universities of Brunswick, 

 and his uncle, Friedrich Sigis^mund Leuckart, a zoologist of 

 repute ; wherefore it would appear that there was in the family 

 a taste for the study of natural history. Leuckart's memory 

 will ever centre in his famous resolution of the great Cuvierian 

 division ' Eadiata' into the Coelenterata and Echinodermata ; a 

 masterly achievement which, with its correlated recognition 

 of the Vermes, Arthropoda, Mollusca, and Vertebrata, furnished 

 the key-stones in the fabric of the Zoological system still in 

 vogue. All this was set forth in the pages of the 'Morphologie 

 und Verwandtschaftsverhiiltuisse der vvirbellosen Thiere,' pub- 

 lished in 1848. To have thus revolutionized au entire branch of 

 science at the early age of 25 was to have given proof of genius, 

 and the event came before tbe world a fitting sequel to the fact 

 that its author wliile still a student had completed the ' Lehrbuch 

 der Zootomie ' of his teacher Eudolph Wagner; and as early 

 as 1847 had published, in conjunction with Heiurich Frey, 

 the ever noteworthy ' Beitrage zur Kenntniss der wirbelloseu 

 Thiere.' 



On the completion of his student career at Gottingen, Leuckart 

 was made Assistant in the Physiological In!^titule of that Uni- 

 versity. In 1850 he was appointed Professor Extraordinarius 

 of Physiology at the University of Giessen, the fame of which 

 was then, through the genius of Liebig, resounding throughout 

 the Fatherland. He was in 1855 promoted to the office of 

 Ordinary Professor, and in 1870 he was transferred to Leipzig, 

 "where, as Professor of Zoology and Zootomy, and Director of the 

 Zoological-Zootomical Institute and Museum, he worked out the 

 later triumphs of his career. Among the topics with which hia 

 name will be ever memorably associated, there may be mentioned 

 that of division of labour in the animal kingdom, of the develop- 

 mental processes in the Apidse and in the Ceijhalopoda, of the 

 recognition of the osphradium in certain Mollusca, and of the 

 determination of the molluscan affinities oi Neomemia, all highly 

 technical, and each productive of far-reaching results. Great as 

 were Leuckart's powers of research, and inspiriting his discourses, 

 his erudition and literary resources, begotten of intense devotion 

 and close application to his calling, were no less remarkable. 

 "Witness his Editorship of the ' Bibliotheca Zoologica,' and the 

 lr>ng series of summaries of contemporary research which he 

 year after year contributed to the pages of VViegmanu's Archiv ; 

 and — more popular among his numerous writings — his standard 



