PROCEEDINGS OF THE ACADEMY AND AFFILIATED 



SOCIETIES 



WASHINGTON ACADEMY OF SCIENCES 



The Board of Managers met on April 29, 1918. Upon the recom- 

 mendation of the special committee on the Journal, it was decided to 

 discontinue the lists of references which have been published in the 

 Journal from time to time, and to appoint a group of assistant editors 

 to supplement the present editorial board of three members. The 

 Academy's membership in the American Metric Association was con- 

 tinued for the present year. Ten resident and five nonresident mem- 

 bers were elected. 



Robert B. Sosman, Corresponding Secretary. 



BIOLOGICAL SOCIETY OF WASHINGTON 



The 583d regular meeting of the Society was held in the Assembly Hall 

 of the Cosmos Club, Saturday, April 6, 1918; called to order at 8 p.m. 

 by President Rose; 37 persons present. 



On recommendation of the Council, Miss Crystal Thompson and Mr. 

 Norman A. Wood, both of the Museum of Zoology, Ann Arbor, Mich- 

 igan, were elected to membership. 



The following informal communications were presented; 



W. L. McAtee remarked on the contents of birds' stomachs and ex- 

 hibited the stomach of a merganser containing an embedded fish 

 hook, which undoubtedly had been in a swallowed fish. 



Gen. T. E. Wilcox remarked that he had once found an Indian arrow 

 head in the stomach of a grouse. 



Dr. L. 0. Howard called attention to efforts made to limit the spread 

 of pink boll-worm by the establishment of cotton -free zone: in Texas. 



William Palmer exhibited some fossil teeth and bones lately ob- 

 tained by him from the Calvert Cliffs, near Chespeake Beach, Mary- 

 land: tooth of Hexanchus primigenius; fragment of bone of Puffinus; 

 tooth of Champsodelphis acutidens; tooth of a sirenian; tooth of Del- 

 phinodon, n.s.; tooth of Thinotherium annulatum. His remarks were 

 discussed by Dr. L. 0. Howard and Capt. M. W. Lyon, Jr. 



The regular program consisted of two communications; 



C. D. Marsh: The cause of milk sickness or trembles. The first publi- 

 cation in regard to milk sickness was in 1810, but it had been known as 

 far back as the Revolutionary War. The disease was especially common 

 in the early days in the states of Ohio, Indiana, and Illinois, but has 

 rarely been recognized in pubhcations upon diseases as a disease with a 



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