xviii Biological Society of Washington. 



THEOBALD SMITH : " Peculiar Forms of Red Corpuscles in 

 Mammalia in Anaemic Conditions." 1 



February 6, 1892. 188th Meeting. 



The PRESIDENT, Dr. C. HART MERRIAM, delivered the annual 

 address, entitled " The Geographic Distribution of Life in North 

 America." 2 



The meeting was held in the law lecture-room of Columbian 

 University, there being 132 persons present. 



February 20, 1892. 189th Meeting. 



The PRESIDENT in the chair and 41 persons present. 



A committee, consisting of Mr. WALCOTT, Mr. LUCAS, and Mr. 

 RATHBUN, was appointed to revise the Constitution and By-Laws 

 of the Society. 



COMMUNICATIONS. 



W. H. DALL : " Factors in the Distribution of Animal Life as 

 Illustrated by Marine Forms." Discussed by Mr. WALCOTT, Mr. 

 FERNOW, and Dr. DALL, 



F. A. LUCAS: "On Carcharodon mortoni, Gibbes." 3 

 J. M. HOLZINGER : " On the Identity of Asclepias stenophylla 

 and Acerates auricidata" 4 Discussed by Professor WARD, Mr. 

 FERNOW, Mr. COVILLE, Mr. WALCOTT, Dr. DALL, Dr. CURTICE, 

 Professor SEAMAN, Dr. ERWIN F. SMITH, Dr. BAUER, Mr. LUCAS, 

 Mr. BANKS, and Dr. STILES. 



March 5, 1892. 190th Meeting. 



The PRESIDENT in the chair and 35 members present. 



COMMUNICATIONS. 



FREDERICK V. COVILLE : " Conditions Affecting the Distribu- 

 tion of Plants in North America." Discussed by Mr. LUCAS, Mr. 



1 On changes in the red blood corpuscles in the pernicious anaemia of 

 Texas cattle fever. Trans, of the Assoc. of American Physicians for 1891. 



Bulletin No. 1, Bureau of Animal Industry: Investigations into the 

 nature, causation, and prevention of Texas or Southern cattle fever (pp. 

 56, 68). by Theobald Smith and F. L. Kilborne, Washington. 



2 Proc. Biol. Soc. Wash., vol. vii, Apr. 13, 1892, pp. 1-64, 1 map. 



3 On Carcharodon mortoni. Proc. Biol. Soc. Wash., vol. vii, July, 1892, 

 pp. 151, 152. 



4 The identity of Apdepias stenophylla and Acerates auricalata. The Bo- 

 tanical Gazette, vol. xvii, April, 1892 ; pp. 124, 125. 



