1870.] 277 [Whitney. 



Everett, Arthur M. Knapp, Charles F. Lynch, Charles C. 

 Smith, Charles A. Wellington, David Whiton and Charles G. 

 Wood, of Boston, were elected Resident Members. 



The Vice President announced that the next course of 

 Lectures under the auspices of the Society, would be deliv- 

 ered by Mr. Francis G. Sanborn, on four successive Monday 

 evenings, commencing April 25th; the subject would be 

 " Familiar Talks about Insects." 



Section of Microscopy. April 13, 1870. 



Dr. B. Joy Jeffries in the chair. Five persons present. 



Messrs. W. H. Niles and Edward Burgess were elected 

 Members of the Section. 



Mr. W. F. Whitney described the structure of the hairs 

 borne by the seed of Tillanchia usneoides ; these are covered 

 with points or barbs, directed toward the seed, formed by 

 projections of the wall of the cells composing the hairs, which, 

 catching on passing bodies, insure a wide distribution of the 

 plant. Mr. Whitney also remarked that he had detected the 

 presence of raphides in this plant, which, being a true epi- 

 phyte, must have obtained from the air the mineral matter to 

 form these crystals. 



April 20, 1870. 



Vice President, Dr. C. T. Jackson, in the chair. Fifty three 

 persons present. 



The following paper was read : — 



Note on the Glacial Moraines of the Charles River 

 Valley, near Watertown. By N. S. Shaler. 



I have already endeavored to establish the succession of events 

 during the last glacial period, by a study of the remains of the detri- 



