PROCEEDINGS. 81 



Prof. Lester F. Ward read a paper entitled A Statistical View of 

 the Flora of the District of Columbia.* 



Prof. J. H. Comstock read a paper entitled Notes on Scale In- 

 sects, illustrating his remarks by a collection of specimens. f 



Thirteenth Meeting, May 20, 1881. 



The President occupied the chair. Thirty-one members were 

 present. 



Prof. Riley made some remarks upon Prof. Comstock' s paper 

 on Scale Insects, and was responded to by Prof. Comstock. Dr. 

 George M. Sternberg, U. S. A., read a paper entitled On Mi- 

 crococcus septicusJ illustrating his remarks by photo-micrographs 

 thrown upon a screen by the lantern. This paper was discussed by 

 Messrs. Seaman, Ward, and Taylor. 



Fourteenth Meeting, June 3, 1881. 



The President occupied the chair. Thirty-five members were 

 present. It was announced that after the next meeting the Society 

 would be adjourned until the first Friday in October. 



Dr. D. W. Prentiss read a paper entitled The Physiological Ac- 

 tion of Jabirandi, (Pilocarpus pinnatifolius.)§ 



* 1 88 1 . Ward, Lester F. Field and Closet Notes on the Flora of Washington 

 and Vicinity. -^Bulletin, Philosophical Society of Washington. IV. 1SS1. 

 pp. 64-120. (Statistical View pp. 88-104, 116-119.) See also in Bulletin 22 

 U. S. National Museum, cited above, p. 26. 



f 1881. Comstock, James H. Report on Scale Insects. <Report of the 

 Entomologist of the U. S. Department of Agriculture for the year 1880. pp. 

 235-373. (Scale Insects, pp. 276-349. Plates III-XXII.) 



J Sternberg, George M. A Contribution to the Study of the Bacterial Or- 

 ganisms commonly found upon exposed Mucous Surfaces, and in the Alimentary 

 Canal of Healthy Individuals. <[Studies from the Biological Laboratory of Johns 

 Hopkins University. II. 1882. pp. 157-181. Plates XI-XIII : and in Pro- 

 ceedings, American Assoc. Adv. Sci., XXX, 1881. 



\ 1 88 1. Prentiss, D. Webster. Remarkable change of color of the hair 

 from light blonde to nearly jet black in a patient, while under treatment by pilo- 

 carpin. Report of pyelo-nephritis, with unusually prolonged anuria. ^Phila- 

 delphia Medical Times. XL 1881. (No. 335, July 2, 1881.) pp. 609-12; also 

 reprinted with following title : 



1. I Remarkable change in the color of the | hair from light blonde to 



