50 proceebijS'gs of the geological socmTT. 



His great work, the ' Geologie cler Schweiz,' made its appear- 

 ance between the years 1851 and 1853 ; and in the latter year there 

 was published, with the co-operation of Escher von der Linth, the 

 well-known Map of Switzerland upon which they had been so long 

 engaged. IS'umerous papers on the geology of his native country 

 appeared from time to time during subsequent years, Studer travel- 

 ling to all parts of Europe to examine the rocks of other districts 

 and make comparisons of them with those of the Alps. 



Studer's merits as a geologist were recognized both at home and 

 abroad. He was elected a Correspondent of the Erench Academy, 

 and he received the Prussian order " pour le merite." In 1879 he 

 was awarded the AYollaston AEedal of this Society. 



JSTo sooner had the celebrated Map of Switzerland been completed 

 than Studer engaged in a scheme for securing a systematic geolo- 

 gical survey of the whole of Switzerland. Eor this work the fine 

 topographical survey of the country by Dufour, commenced in 1843, 

 afi'orded the necessary basis. Of the commission appointed to carry 

 on this work, Studer acted as chairman, and it was only when 

 advancing age and impaired eyesight rendered his superinteadence 

 of the work no longer possible that he resigned the office. 



Beloved in his native town, honoured in every State of the Swiss 

 Confederation, and respected abroad, Studer, to the last, continued 

 to travel and work at his favourite pursuits. On the 2nd of May, 

 1887, the proofs of the last sheet of the ' Atlas of Switzerland ' 

 were brought to him — the great work that had occupied so much of 

 the latter half of his life was completed ; and on the same day he 

 passed away without pain at the advanced age of 93. 



Professor Laurent-Guillatjme be KoNTiircE: was born at Louvain, 

 May 3rd, 1809, and was educated for the profession of medicine ; 

 he soon, however, developed such a taste for scientific pursuits that in 

 1831 he was appointed an assistant in the chemical schools of the 

 University of his native town. During the years 1834 and 1835 he 

 studied in the laboratories of Gay-Lussac and Thenard at Paris, of 

 Mitscherlich at Berlin, and of Liebig at Giessen, and in the latter 

 year commenced the teaching of chemistry, first at Ghent and then 

 at Liege. After occupying subordinate posts in the University of 

 the last-named town for nearly twenty years, he became Professor 

 of Chemistry in the year 1856. 



But although de Koninck was throughout his life Professor of 

 Chemistry, and made from time to time by no means unimportant 



