478 



[Nov. 1, 



lands; Schlesische Gesellschaft fiir Vaterlandische Cultur, 

 Breslaii, Prussia; Wetterauische Gesellschaft fiir die ge- 

 sammte Naturkunde, Hanau, Germany; K. Siichsische Gesell- 

 schaft der Wissenschaften, Leipzig ; K. Geodiitische Institut, 

 Potsdam, Prussia ; Zoological Society, London, England. 



Letters of acknowledgment from the Societe Imp. des 

 Naturalistes, Moscow, Russia (HS, 146); Societe R. de Geo- 

 graphic, Antwerp, Belgium (147); Musee R. de Histoire 

 Naturelle de Belgique, Bruxelles (147); Fondationde P. Tey- 

 ler van der Hulst, Harlem, Holland (147, and Trans.^ xviii, 2) ; 

 Prof. J. Szombathy, Vienna, Austria (147) ; Physiologische 

 Gesellschaft, Ceniralblatt fur Fhysioloyie, Berlin, Prussia 

 (142-146) ; Yerein fiir Thiiringische Geschichte und Alter- 

 thumskunde, Jena, Germany (147); Drs. 0. Bohtlingk (147), 

 Julius Platzmann (146), Leipzig, Saxony; Naturwissenschaft- 

 Hche Verein, Regensburg, Bavaria (141-146) ; Prof. J. P. Post- 

 gate, Cambridge, England (142-147); Radcliff'e Observatory, 

 Oxford, England (147, and Trans., xviii, 2); Prof. Lyman B. 

 Hall, Haverford, Pa. (147). 



Accessions to the Library were reported from the K. Akad- 

 emie van Wetenschappen, Amsterdam, Netherlands ; Akad- 

 emie der Wissenschaften, Budapest, Hungary ; K. Akademie 

 der Wissenschaften, Vienna, Austria ; Socidte R. des Sciences, 

 Liege, Belgium; K. P. Geodaitische Institut, Berlin, Prussia; 

 Schlesische Gesellschaft fiir Vaterlandische Cultur, Bre^lau, 

 Prussia; Oberhessische Gesellschaft fiir Natur- und Heil- 

 kunde, Giessen, Germany ; Naturhistorische Gesellschaft, 

 Niirnberg, Bavaria ; Royal Society, London, Eng. ; Geological 

 Survey of Canada, Ottawa ; Society of Naval Architects and 

 Marine Engineers, Academy of Sciences, New York, N. Y. ; 

 Pennsylvania Hospital, Philadelphia ; Smithsonian Institution, 

 Mr. Alexander M. Bell, Washington, D. 0. ; Wisconsin Acad- 

 emy of Sciences, Madison ; University of Chicago, Chicago, 111. 



A memoir of P. F. Rothermel was read by Mr. J. G. Rosen- 

 garten. 



Mr. Prime spoke on the effect of the rapidly increasing pro- 

 duction of gold on values generally. 



