LINNEAN SOCIETY OF LONDON. xlv 



and other European languages. In 1815 he was appointed First 

 Director of the Zoological Museum ; and in that capacity pub- 

 lished, in 1816, an 8vo volume, entitled ' Das Zoologische Museum 

 der Universitat zu Berlin ; ' and in subsequent years a series of 

 Catalogues under the title of " Verzeichniss der Dubletten des 

 Zoologischen Museums, &c.," in which many new species, especially 

 of birds, were from time to time described. His " Darstellung neuer 

 oder wenig bekannter Saugethiere in Abbildungen und Beschrei- 

 bungen," a splendid folio work, published at Berlin from 1827 to 

 1829, contains figures and descriptions of many important animals 

 from the collection of the Berlin Museum ; and a multitude of 

 other works and essays in the 'Transactions ' of the Berlin Academy, 

 in Wiegmann's 'Archiv,' and in other periodicals, attest his con- 

 tinued attention to his favourite pursuit nearly to the close of his 

 long and useful life. Among these, not the least interesting and 

 instructive are his Commentaries on Marcgrave and Piso, and on 

 Hernandez, in which he has not only ably illustrated the labours 

 of those early pioneers of American zoology, but has added much 

 valuable information derived from the study of the important 

 collection of which he had the principal charge. In 1826 he 

 received the order of the Eed Eagle ; in 1835 he was elected a 

 Foreign Member of the Linnean Society ; and he died suddenly, at 

 Berlin, in September last, having nearly completed his 78th year. 



Johannes Muller, M.D., Professor of Anatomy in the University 

 of Berlin, Member of the Boyal Academy of Berlin, Foreign Mem- 

 ber of the Boyal Society of London, and Correspondent of the 

 French Institute, was born at Coblentz, on the 14th of July 1801, 

 became Professor at Berlin in 1831, Foreign Member of the 

 Linnean Society in 1837, and died at Berlin of an apoplectic 

 stroke on the 28th of April of the present year, in the 57th year 

 of his age. The news of the death of this great physiologist is so 

 recent, that I must entreat the Society to excuse my not having 

 prepared a sketch of his life, which has had too great an influence 

 on the existing state of science to be treated of without due con- 

 sideration. 



Christian Gottfried Nees von Esenbech, President of the Imperial 

 Academy " Naturw Curiosorum,'' was born on the 14th of February 

 1776, and educated at the Psedagogium of Darmstadt, where he 

 first imbibed a taste for the pursuit of natural history. He studied 

 medicine at the University of Jena, where he took his Doctor's 

 Degree, and afterwards established himself as a practising phy- 

 sician at Frankfort-on-the-Maine. His first botanical publication, 



