Journal of the Washington Academy of Sciences k 
This JouRNAL, the official organ of the Washington Academy of Sciences, 
present a brief record of current scientific work in Washington. To this end it p 
(1) short original papers, written or communicated by members of the Acade 
short notes of current scientific literature published in or emanating from Washin 
(3) proceedings and programs of meetings of the Academy and affiliated Societies; 
notes of events connected with the scientific life of Washington. The Journatis iss 
semi-monthly, on the fourth and nineteenth of each month, except during the summ: 
_ when it appears on the nineteenth only. Volumes correspond to calendar years. Promp 
publication is an essential feature; a manuscript reaching the editors on the fi 
the twentieth of the month will ordinarily appear, on request from the author, i 
issue of the JourNAt for the following fourth or nineteenth, respectively. 
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