lx PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [March. 1913, 



morgana which he had observed on the Lake of Geneva and the 

 Mediterranean. 



He was Life Member of the Societe Helvetique des Sciences 

 Naturelles, of which he had been an ordinary member since 1864 - 

 an Honorary Member of the Societe Vaudoise, of which he had also 

 been an ordinary member since 18G4 ; an Honorary Professor of the 

 University of Lausanne, on his retirement from the chair of Ana- 

 tomy & Physiology ; a Doctor honoris causa of the University 

 of Geneva ; an Honorary Member of the Societe des Sciences 

 Naturelles of Bale ; the first recipient of the William Huber Prize 

 awarded by the Societe Geographique de France : and a recipient 

 of the Order of the Crown of Wurtemberg. He was elected a 

 Foreign Correspondent of this Society in 1910, and he was also an 

 honorary member of both the Swiss Alpine Club and the British 

 Alpine Club. 1 [E. J.G.] 



Ernst von Ivoken was born at Brunswick on May 29th, 1860, 

 and studied in the Universities of Gottingen, Zurich, and Berlin. 

 He graduated at Berlin in 1884, and in the following year he 

 became assistant to Prof. Beyrich in the Geological Institute of the 

 University. At that time the rocks, minerals, and fossils were 

 being removed from the old University buildings to the new 

 Museum of Natural History, and Koken was associated with Dames 

 in the laborious task of re-arranging the collection in the new 

 cases and cabinets. In 1890 he was appointed Professor of 

 Geology & Mineralogy in the University of Konigsberg, and in 

 1895 he removed to Tiibingen, where he held the corresponding 

 Professorship until his death on November 21st, 1912. 



Though interested in all branches of geological science, Koken 

 devoted himself especially to palaeontology and the use of fossils in 

 stratigraphy. His Inaugural Dissertation in 1884 was the first 

 serious attempt to identify the otoliths of bony fishes which are 

 common in some Tertiary formations, and in 1888 and 1891 he 

 made two more valuable contributions to the same subject. 

 Among other early researches may also be mentioned his work on 

 the reptilian remains from North German "Wealden and Cretaceous 

 formations, with important observations on the Mesozoic crocodiles. 

 From 1899 onwards he devoted much attention to the Palaeozoic 

 gastropods, and published several papers noteworthy for the philo- 



1 We are indebted to the courtesy of Prof. Dr. Henri Blanc for much of th» 

 information embodied in this obituary notice. 



