Proceedings. xvii 



March lo, 1900 — 320th Meeting. 



The President in the chair and 125 persons present. 



The evening was devoted to a lecture by Prof. Dean C. Wor- 

 cester on "The Birds and Mammals of the Philippines" (illus- 

 trated by lantern slides). 



March 24, 1900—32151 Meeting. 



Vice-president Lucas in the chair and 46 persons present. 

 B. W. Everniann exhibited a number of colored illustrations 

 of the peculiar and interesting fishes of Puerto Rico. 

 The following communications were presented: 

 Sylvester D. Judd: Feeding Experiments with Captive Birds. 

 W. H. Osgood: Notes on a Trip down the Yukon River.* 

 F. A. Lucas: The Tusks of the Mammoth. 



April 7, 1900— 322d Meeting. 



Vice-president Ashmead in the chair and 37 persons present. 



W. P. Hay exhibited living specimens of an interesting 

 Crustacean [Branchijyus serratus). It was stated that this 

 genus, which is normally a fresh water form, has been trans- 

 formed into a salt water form by being grown in salt solutions. 



F. D. Gardner exhibited specimens of fine oolitic sand from 

 shore of Salt Lake. 



The following communications were presented: 



L. O. Howard: Some Kew Hlustrations of Insects (illustrated 

 with lantern slides). 



F. W. True: The Newfoundland Whale Fishery (illustrated 

 with lantern slides). 



. April 21, 1900—323(1 Meeting. 



The President in the chair and 28 persons present. 



H. J. Webber described the migration of the vegetative nu- 

 cleus in the pollen-tube of Zaniia from the apex of the tube, 

 when growth in that region ceases, back to the pollen-grain end 

 of the tube, when the growth begins in that section of the tube 

 just previous to fecundation. 



*N. Am. Fauna, No. 19. October 6, 1900. Under the title "Results 

 of a Biological Reconnoissance of tlie Yukon River Region." 



