1901.] NATUEAL SCIEN'CES OF PHILADELPHIA, 191 



MaPvCH 5, 



Mr. Charles Roberts iu the Chair. 

 Twelve persons present. 



March 12. 



Mr. Arthur Erwin Browx, Vice-President, in the Chair. 



Seventeen persons present. 



A paper entitled " Observations made in 1900 on Glaciers in 

 British Columbia," by George and William S. Vaux, Jr., was 

 presented for publication. 



March 19. 

 The President, Samuel G. Dixon, M.D. , in the Chair. 

 Eighteen persons present. 



Papers under the following titles were presented for publication: 



" New Mollusca from Japan, Formosa and the Philippine 

 Islands," by Henry A. Pilsbry. 



" The Forficulidre, Blattidje, Mantidse and Phasmidse collected 

 in Northeast Africa by Dr. A. Donaldson Smith," by James A. 

 G. Rehn. 



" The Limits of Variation in Plants," by John W. Harsh- 

 berger, M.D. 



