xii Proceedings of the Biological Society of Washington. 



The regular program consisted of two communications as 

 follows : 



A Note on the Hibernation of the Mud-Turtle; Alexander 

 Wetmore and Francis Harper. 



Botanizing in the Hawaiian Islands; A. S. Hitchcock.* 



April 21, 1917— 570th Meeting.t 



President Hay in the chair, 35 persons present. 



The regular program consisted of two communications as 

 follows : 



Notes on American Flying Squirrels ; A. H. Howell. 



On the Finding of Supposed Pleistocene Human Remains at 

 Vero, Florida; 0. P. Hay. 



May 5, 1917— 571st Meeting.* 



President Hay in the chair, 25 persons present. 



President Hay exhibited a lantern slide of some very imma- 

 ture flying squirrels. 



The regular program consisted of two communications as 

 follows : 



The Influence of Cold in Stimulating the Growth of Plants; 

 F. V. Coville. 



The Rate of Growth in Certain Lower Vertebrates ; W. P. Hay. 



October 20, 1917— 572d Meeting.^ 



President Hay in the chair, 42 persons present. 



General T. E. Wilcox presented a brief note on the occur- 

 rence of the California vulture in Idaho. 



Dr. R. W. Shufeldt exhibited a specimen of the " gopher," 

 Testudo polyphemus . 



Dr. L. O. Howard referred to the peculiar insect fauna found 

 in the burrows of the " gopher." 



President Hay referred to the peculiar species of frog found 

 in the burrows of the " gopher." 



Dr. T. S. Palmer remarked on bird roosts lately seen in the 

 vicinity of Washington. 



♦Published in Sci. Month., vol. 5, pp. 323 to 349, October, 1917; and pp. 417-432, 

 November, 1917. 



t Abstracts in Journ. Washington Acad. Sci.. vol. 7, pp. 358-360, June 4, 1917. 



t Abstracts in Journ. Washington Acad. Sci., vol. 7, p. 394, June 19, 1917. 



§ Abstracts in Journ. Washington Acad. Sci., vol. 8, pp. 25-27, January 4, 1918. 



