XIV BIOLOGICAL SOCIETY OF WASHINGTON. 



Mr. L,. F. Ward read a paper on FORTUITOUS VARIATION 

 AS ILLUSTRATED BY THE GENUS EUPATORIUM, WITH EXHIBI 

 TION OF SPECIMENS.* Discussed by Dr. Merriam, Mr. Goode, 

 Prof. Riley, and by Messrs. Stejneger, Vasey, Mann, and 

 Seaman. 



Prof. Riley read a NOTE ON A HUMAN PARASITE. 



Mr. E. S. Burgess presented a paper on the discovery of 

 ASTER SHORTII NEAR WASHINGTON. Discussed by Dr. 

 Vasey. 



ONE HUNDRED AND THIRTY-FIFTH MEETING, 

 December 29, 1888. 



Vice-President Merriam in the chair, and forty-nine members 

 present. 



Dr. Theobald Smith read a paper on CONTAGION AND IN 

 FECTION FROM A BIOLOGICAL STANDPOINT. Discussed by Dr. 

 Prentiss and Dr. Schaeffer. 



Mr. F. A. LyUcas presented some NOTES ON THE DISEASES 

 OF MENAGERIE ANIMALS. Discussed by Dr. Merriam, Dr. 

 Salmon, Prof. Atwater, and Messrs. Goode, Hornaday, and 

 True. 



Mr. Th. Holm read NOTES ON HYDROCOTYLE AMERI 

 CANA, f 



ONE HUNDRED AND THIRTY-SIXTH MEETING, 

 January 12, 1889. 



(Ninth Annual Meeting.) 



The President in the chair, and forty members present. 

 The following amendment to the Constitution was proposed 

 by the President : 



* 1889. Abstract in Nature (London), July 25, p. 310. 



t 1889. Proc. U. S. Nat. Mus., xi, pp. 455-462, Plates xlvi, xlvii. 



