336 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 14 
SCIENTIFIC NOTES AND NEWS 
The twenty-fourth biennial edition of the Directory of the Washington 
Academy of Sciences has just been issued. This contains the names and 
and addresses of members of the Acapemy and of each of the 16 affiliated 
societies. A list of the scientific and technical societies of Washington which 
are not affiliated with the AcapEemy, and of national societies having head- 
quarters or offices in Washington, is also included. 
The following persons have become members of the Acaprmy since the 
last report in the Journal (August 19, 1922, p. 341). Except when other- 
wise noted the address is Washington, D. C. 
C. W. Larson, M. G. Luoyp, A. P. Hircuens, W. L. Cueney, E. W. 
Branpes, F. H. Smytu, F. W. Surtuer, G. E. F. LunDELL, F. La FLESCHE, 
V. Brrcxner, L. L. Streets, E. R. Wempuern, University of Pittsburgh, 
Pittsburgh, Pa., W. S. Franxury, Massachusetts Institute of Technology, 
Cambridge, Mass., A. T. Pienxowsxy, H. 8. Roperts, R. W. Batcom, 
H. B. Brooks, E. C. Ecxnarpt, A. C. Hunter, Witson Porsenog, A. O. 
Toot, E. A. Gonpman, E. R. Weaver, Epwarp Wicuers, P. H. Bartss, 
R. K. Breartis, R. F. Jackson, J. B. 8. Norton, College Park, Md., W. F. 
Srurz, J. M. Suerman, F. B. LaForer, W. A. Suater, Urbana, Il., A. C. 
Bovine, R. H. Daucuetsn (reinstated), W. M. Corsz, E. P. Kinuip, C. 
G. Perers, L. H. ReicHeLperrerR, H. Suaptey, Harvard Observatory, 
Cambridge, Mass., G. Srerner, O. P. Hoop, A. R. Curyrnery, and W. P. 
WHITE. 
Dr. Raut Gautier, Director of the Observatory and Professor in the 
University of Geneva, Switzerland, was recently elected to honorary mem- 
bership in the Washington Academy of Sciences in recognition of his 
prominence in geodesy and his intimate connection with scientific work in 
Washington. 
The experimental research laboratory of the Navy Department, author- 
ized by act of Congress in August, 1916, was formally placed in commission 
on July 2, 1923. The subjects studied at the laboratory will include: Gun 
erosion, torpedo motive power, the gyroscope, submarine guns, protection 
against submarine, torpedo and mine attack, improvement in submarine 
attachments, improvement and development in submarine engines, storage 
batteries and propulsion, aeroplanes and aircraft, improvement in radio 
installations, and other necessary work of the Government service. The 
laboratory is situated at Bellevue, D. C. 
Dr. George N. Acker died in Washington on July 22, 1923, in his seventy- 
first year. He was born in Washington, D. C., October 5, 1852. Dr. Acker 
was educated at Pennsylvania College, Columbian University (now George 
Washington University) and the University of Berlin. He held various, 
positions on the medical staff of George Washington University from 1880 
until his death. He was a member of the Acapemy, Anthropological Society 
of Washington, and the Medical Society of the District of Columbia as well 
as many other medical societies. 
The office of chief of the Bureau of Chemistry, which has been vacant 
since the resignation of Dr. C. L. Atspera in July, 1921, has been filled by 
