1895.] NATURAL SCIENCES OF PH I LADELPH r A. 541 



in the Conshohocken dyke, but they had not yet been identified with 

 this dyke. 



This trap is quite coarse grained and is quite similar in its aspect 

 throughout its whole extent, though coarsest to the northwest. It 

 was examined by Mr. Goldsmith (specimens from the outcrop on 

 Buck Run), who informed Mr. Rand that it is a gabbro-phonolite, 

 containing as it does plagioclastic feldspar, sanidin augite, diallage, 

 magnetite and hematite. 



December 10. 



The President, General Isaac J. Wistar, in the Chair. 

 Forty-four persons present. 

 The death of Samuel G. Lewis, a member, was announced. 



December 17. 

 The President, General Isaac J. Wistar, in the Chair. 

 Thirty-one persons present. 



Papers under the following titles were presented for publication : — 

 " Eclogue Botanica 3 , No. 2," by Edw. L. Greene. 

 "Notes on the Study of the Cross-Fertilization of Flowers by 

 Insects," by Ida A. Keller, Ph.D. 



The Committee on the Hayden Memorial Award reported as 

 follows : — 



Report of the Committee on the Hayden Memorial Award. 



The Committee on the award of the Hayden Memorial Medal 

 and accompanying fund respectfully reports, that, at a meeting held 

 on the 4th of December last, it was unanimously agreed to confer the 

 award for the year 1895, upon Prof. Karl Alfred von Zittel 

 of Munich, Germany, whose services to the sciences of geology and 

 paleontology extend continuously over a period of thirty years. 



In naming this candidate the Committee feels that it is honoring 

 the sciences of which Prof, von Zittel is .so distinguished an exponent, 

 and only properly recognizes the researches which appeal to every 

 student of geology. 



Born in 1839, Prof, von Zittel was, at the age of twenty-four, ap- 

 pointed to the Professorship of Mineralogy at Karlsruhe, and three 



