lxii PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [April 1914* 



soon directed his attention to palaeontology, and in 1861 he 

 published his first two notes on fossils from the Silurian formation. 

 During subsequent years he communicated numerous brief notes 

 on Bohemian fossils to the Royal Bohemian Society of Sciences, 

 until in 1872 he published his first separate work (in co-operation 

 with Dr. V. Schlonbach) on the Cephalopoda of the Bohemian 

 Cretaceous Formation. The Cretaceous fossils continued to interest 

 him, and in 1878 he published another separate volume on the 

 Reptiles and Fishes, which was followed by various notes on these 

 and other fossils in his stratigraphical memoirs issued by the 

 Bohemian Survey. Prof. Fritsch' s best-known work, however, is 

 his ' Fauna der Gaskohle & der Kalksteine der Perm- Formation 

 Bohmens,' a series of four fine volumes published in parts between 

 1879 and 1901. It is especially noteworthy for the profusely- 

 illustrated descriptions of the Permian Labyrinthodonts, based on 

 material so unpromising that previous authors had neglected it. 

 Prof. Fritsch prepared the fossils with his own hands, removing 

 the decaying pyritized bones and then obtaining an exact im- 

 pression of the resulting cavities in the shale by an electrotype 

 process. He was thus able to add much to our knowledge of the 

 early lung-breathers, and the Geological Society expressed its 

 appreciation of these researches by awarding to Prof. Fritsch a 

 moiety of the Lyell Fund in 1881 and a Lyell Medal in 1902. 

 He visited England four times, in 1861, 1863, 1887, and 1899, 

 and travelled extensively in the interests of the Royal Bohemian 

 Museum, the new building of which for natural history he had 

 the gratification of seeing completed under his direction in 1891 » 

 He died at Prague on November 15th, 1913. [A. S. W.] 



V V 



Tiieodosius Nikolaievich Tscheknyschew (Cernysev) was 

 born at Kiev in 1856, and was educated in the local classical college, 

 and in the Naval School and Mining Institute at St. Petersburg. 

 He became a member of the staff of the Geological Survey of 

 Russia at its institution in 1882, and was appointed Director in 

 1903. In 1899 he was elected a member of the Imperial Academy 

 of Sciences at St. Petersburg, and became Director of the Geological 

 Museum in 1903. For nearly 22 years he was Secretary of the 

 I mperial Mineralogieal Society, and for 3 years he performed the 

 duties of Professor and Director of the Mining Institute. 



Notwithstanding these varied duties at home, Tschernyschew 

 found time to carry his field-work into remote regions. The first 



