Proceedings. xi 



informal communications: T. S. Palmer, Note on the syste- 

 matic feeding of quail in the City of Washington during the past 

 winter; R. W. Shufeldt, Exhibition of and remarks on an x-ray 

 picture of double-headed box tortoise, and living specimens of 

 whip-tailed scorpion. 



Formal communications: John T. Zimmer, An instinctive 

 feeding habit of young herons*; E. P. Churchill, Jr., The life 

 history of the blue crab; R. H. True, Notes on the early history 

 of the pecan in America. 



March 23, 1918— 582d Meeting.! 



President Rose in the chair; 65 persons present. 

 Formal communication: Edmund Heller, The Chinese Bor- 

 derland of Tibet and Burma. 



April 6, 1918-583d Meeting.: 



President Rose in the chair; 37 persons present. 



Miss Crystal Thompson and Norman A. Wood were elected 

 to membership. 



Informal communications: W. L. McAtee, Note on and exhi- 

 bition of a fish hook in the stomach of a merganser; Gen. T. E. 

 Wilcox, Remark on an arrow head found in the stomach of a 

 grouse; L. O. Howard, Notes on attempts to limit the spread 

 of the pink boll-worm; Wm. Palmer, Remarks on and exhibition 

 of some fossil bones and teeth from Calvert Cliff, near Chesa- 

 peake Beach, Md. 



Formal communications: CD. Marsh, The cause of milk sick- 

 ness or trembles; J. W. Giclley, Segregation, an important factor 

 in evolution, with its special bearing on the origin and distri- 

 bution of mammals. 



April 20, 1918— 584th Meeting^ 



President Rose in the chair; 35 persons present. 

 Informal communications: Gen. T. E. Wilcox and Dr. L. O. 

 Howard made reference to Roosevelt's A Booklover's Holiday 



* Proc. Biol. Soc. Washington, vol. 31, p. 94, June 29, 1918. 



t Abstracts in Journ. Washington Acad Sci., voi. 8, p. 298, May 4, 1918. 



t Abstracts in Journ. Washington Acad. Sci., vol. 8, pp. 330, 331, May 19, 1918. 



$ Abstracts in Journ. Washington Acad. Sci., vol. 8, pp. 374, 375, June 4, 1918. 



