1891.] 



1G3 



tion, Experiment, Ga. ; Agricultural Experiment Station, 

 Ames, Iowa ; Agricultural Experiment Station, Fort Collins, 

 Colo. ; Agricultural Experiment Station, Auburn, Ala. ; Agri- 

 cultural Experiment Station, Brockings, S. Dak.; Agricul- 

 tural Experiment Station, Corvallis, Oreg. ; Botanische Yer- 

 ein, Provinz Brandenburg, Berlin, Prussia ; Bowdoin College 

 Library, Brunswick, Me. ; Library of the University of Lyons, 

 France; Museo Oaxaquefio, Oaxaca, Mexico; American Mu- 

 seum Natural History, New York City, N. Y. ; New Jersey 

 Natural History Society, Trenton, N. J. 



A circular from the American Chemical Society, New 

 York, announcing a meeting to be held in New York city on 

 December k 29 and 30, 1891. 



Letters of envoy were received from the Geological Survey 

 of India, Calcutta ; Academie des Sciences, Amsterdam ; 

 Observatoriurn der K. K. Nautischen Akademie, Triest; 

 Society of Natural Sciences, Buffalo ; Secretary of State, 

 Washington, D. C. 



Letters of acknowledgment were received from the Comite* 

 Geologique de la Russie, Imperial Russian Geographical So- 

 ciety, St. Petersburg (135); Prof. A. E. Nordenskiold, Stock- 

 holm (134, 135); R. Danish Geographical Society, Copenhagen 

 (135) ; Musee Royale d'Histoire Naturelle de Belgique, Brux- 

 elles (129-134); Academie R. des Sciences, Amsterdam (131- 

 134 and Transactions, xvi, 3) ; K. K. Militar-Geographische 

 Institut, Wien (131-134); K. K. Sternwarte (135); K. K. 

 Astron, Meteorolog. Observatorium, Triest (131-133, 135); 

 Naturforschende Gesellschaft des Osterlandes, Allenburg 

 (135); Prof. F. Reuleaux, Berlin (134); Naturwissenschaft- 

 liche Yerein, Bremen (135); K. Sachsisches Meteorologisches 

 Institut, Chemnitz (135); Yerein fiir Erdkunde, Dresden (135); 

 Naturforschende Gesellschaft, Freiburg i. B. (135); Natur- 

 historische Gesellschaft, Hanover (135); Yerein fur Thiirin- 

 gische Geschichte und Altertumskunde, Jena (135); Dr. Julius 

 Platzmann, Leipzig (135) ; R. Accademia di Scienze Lettere 

 ed Arti, Modena (135) ; R. Comitato Geologico d'ltalia, Prof. 



PROC. AMER. PHILOS. SOC. XXIX. 136. V. PRINTED JAN. 6, 1892. 



