40 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. 2 



the material is non-homogeneous, this inhomogeneity being due to the in- 

 creasing size of the aggregates and to their approaching stratification. 



The paper was illustrated by lantern slides. 



Discussion: This paper was discussed by Messrs. Sosman, C. A. Briggs, 

 SiLSBEE, Tuckerman, and Humphreys. 



S. J. Mauchly, Recording Secretary. 



CHEMICAL SOCIETY 

 (Local Section of the American Chemical Society.) 



268th to 300th meetings 



The 268th meeting was held at the Cosmos Club on February 8, 1917. 

 F. A. McDermott presented a paper on Some experiments on the growth of 

 yeast in synthetic media. The pioposed "code of ethics" for the chemical 

 profession was discussed. Messrs. HillEbrand, Buchbinder and others 

 informally discussed current experience with so-called "analyzed chemicals." 



The 269th meeting was held at the Cosmos Club on March 8, 1917. Co- 

 ordination of action among the local sections of the American Chemical 

 Society was discussed informally. The regular program was as follows: 

 F. B. La Forge: Sedoheptose, a new sugar from Sedum spectabile. E.C. 

 McKelvy: Composition and testing of commercial liqiiid ammonia. D. R. 

 Harper, 3d : Work on the thermodynamic properties of ammonia at the Bureau 

 of Standards. 



The 270th meeting was held at the Cosmos Club on April 12, 1917. Pro- 

 gram: W. M. Clark: Indicators and the hydrogen electrode in the service 

 of bacteriology. J. N. Currie: Citric acid fermentation of Aspergillus niger. 

 L. E. Wise: Elementary organic analysis by micro-combustion methods. 

 F. R. Bichowsky: The electrometric determination of zinc. 



The 271st meeting was held at the Cosmos Club on April 20, 1917. Prof. 

 Marston T. Bogert of Columbia University, Chairman of the Chemistry 

 Committee of the National Research Council, spoke upon Chemistry and the 

 war. The aims and purposes of the Research Council in peace and war 

 were discussed with special reference to chemistry. 



The 272d meeting was held at the Cosmos Club on May 10, 1917. Program : 

 H. D. GiBBs: Catalysis of some oxidation reactions. J. B. TuTTlE and L. 

 YuROW: Direct determination of rubber by combustion of the nitrosite. I. K. 

 Phelps and H. E- Palmer: Separation and identification of lactic acid in 

 biological mixtures. 



The 273rd meeting was held at the Cosmos Club on October 11, 1917. 

 Program: W. D. Collins: Arsenic in sulphured food products. C. C. 

 McDonnell: Investigations on lead arsenate. F. P. Veitch: Investiga- 

 tions of shoe soling material. 



The 274th meeting was held at the Cosmos Club on November 8, 1917, 

 and was devoted to the annual election of officers for the ensuing year. 

 The election resulted as follows : President, Frederick B . Power ; Secretary, 

 E. C. McKelvy; Treasurer, F. P. Dewey; Members of Council of American 

 Chemical Society, C. O. Johns, A. Seidell, F, W. Smither, R. B. Sosman; 

 Members of Executive Committee, F. C. Cook, P. B. Dunbar, E. H. Inger- 

 SOLL, M. J. Ingle, E. C. Lathrop, F. A. Wertz. 



The 275th meeting was held at the Cosmos Club on November 19, 1917. 

 Prof. C. A. Kraus lectured on Laboratory methods and apparatus. 



