1854.] Linnean Society. 325 



2 vols. 8vo ; and in his ' Voyage dans le district des Diamans et sur 

 le litoral du Bresil,' 2 vols. 8vo, Paris, 1833. His health in the 

 mean time became greatly deteriorated by his labours, both in the 

 cabinet and in the field ; he fell into an extreme state of nervous de- 

 bility, lost the faculty of speech, and in a great degree of sight also ; 

 and was compelled to retire to Montpelier, where the pure air, and 

 the care of his friendly physicians, Dunal and Lallemand, at length 

 restored him in a great measure to his former activity. He resumed 

 his contributions to the ' Memoires du Museum,' and published in 

 1840, in 8vo, his last great work, under the title of ' Lecons de 

 Botanique, comprenant principalement la Morphologic vegetale, la 

 Terminologie, la Botanique com])aree, et I'Examen de la Valeur des 

 Caracteres dans les diverses Families naturelles.' In this work he 

 has given a resume of the philosophical ideas which formed through 

 life the groundwork of his botanical investigations, and which fixed 

 the stamp of originality on his views, while the accuracy of his ob- 

 servations gave a high value to his systematic labours. He was 

 elected a Correspondent of the Academy of Science during his ab- 

 sence in Brazil, and in 1830 succeeded Lamarck as a Member of 

 the Botanical Section. His election into the Linnean Society dates 

 from 1827, and he died on the 3rd of May 1853. 



Christian Friedrich Schivdgrichen was the son of Christian Gott- 

 fried Schwagrichen, a merchant of Leipzig, in which town he was 

 born on the 16th of September 1774. He took the degrees of Master 

 of Arts and Doctor of Medicine in the University of Leipzig, and in 

 1799 published a Dissertation, entitled ' Topographise Botanicse 

 et Entomologicce Lipsiensis Specimen Primum,' which was followed 

 in the same year by ' Topographiaj Botanicse Lipsiensis Specimen 

 Secundum,' and in 1804, on his appointment to the chair of Extra- 

 ordinary Professor of Natural History, by ' Topographise Naturalis 

 Lipsiensis Specimen Tertium.' In the title-page to the latter he 

 dropped his first Christian name, and ever afterwards used that of 

 Friedrich only. In 1803 he published an elementary work on 

 Natural History, entitled ' Unterricht in der Naturgeschichte fiir 

 Schiilen,' 2 vols.; and in 1819, ' Topographia Naturalis Lipsiensis 

 ad Anthropologiam et Medicinam applicata.' But by far the most 

 important of his works are those which treat of Mosses and Hepa- 

 ticae. On the latter he published ' Historise Muscorum Hepaticorum 

 Prodromus,' Lips. 1814, 4to; and in regard to the former he com- 

 menced by editing, in 1801, the posthumous work of his predecessor 

 Hedwig, entitled ' Species MuscOrum Frondosorum,' which he fol- 

 lowed up in successive years, until 1842, with numerous supple- 



