ANNIVEESART ADDEESS OE THE PRESIDENT. 5 1 



BoDn, the " Niederrheinische Gesellschaft," and especially the 

 " Naturhistorische Verein der Preussischen Rheinlande und West- 

 falens," of which he was an honorary member from its commence- 

 ment in 1834, and president from 1848 till his death. The fact 

 that the number of members increased from 280 to over 1500 under 

 his presidency sufficiently indicates the spirit imparted to the last- 

 named society by his guidance. 



It is unnecessary to attempt to give a list of the honours showered 

 upon so distinguished an official and so worthy a geologist equally by 

 his own and foreign governments and by learned societies in all parts 

 of the world. I have reason to know, however, that he always 

 greatly valued the Poreign Membership of the Geological Society, one 

 of the first recognitions of the kind, and that he was proud of being 

 our senior Foreign Member. He was a corresponding member of the 

 French Academy and a member of the Belgian. In the year 1884, 

 and consequently when upwards of 84 years old, he not only presided 

 over the sittings of the Geological Congress at Berlin as Honorary 

 Presidentj but took a most active part in the proceedings. He pre- 

 served his wonderful powers of mind and body to an unusually 

 advanced age, and died regretted and honoured by the geologists of 

 other lands almost as warmly as by those of Germany. 



Peiedeich August von" Quenstedt was born, the son of poor 

 parents, at Eisleben, in Prussian Saxony, on the 9th July, 1809. 

 He studied at Berlin under Weiss, then Professor of Mineralogy at 

 the University of that city, and became Professor of Mineralogy, 

 Geology, and Palaeontology at Tiibingen, the University of Wiirt- 

 temberg, in 1837. This post he held for more than fifty-two years, 

 until his death on the 21st of last December. He became a 

 Foreign Correspondent of this Society in 18.63, was elected a Foreign 

 Member in 1885, and was awarded the balance of the Lyell Dona- 

 tion Fund in 1880. 



The principal work of Quenstedt's life was the study of the 

 Wiirttemberg fossiliferous rocks, and especially of the Jurassic 

 system. To this subject several of his best-known publications are 

 devoted, especially his ' Flotzgebirge Wiirttembergs ' (1843), his 

 ' Jura ' (1857), and his last great work ' Die Ammoniten der 

 schwabischen Jura ' (1888). But his most widely-known palseon- 

 tological publications are his ' Handbuch der Petrefactenkunde,^ 

 first issued in 1852, and of which subsequent editions appeared in 

 1867 and 1882, and his ' Petrefactenkunde Deutschlands,' com- 



