52 



SCIENCE 



[N. S. Vol. XLIX. No. 1254 



Colonel Walter Dill Scott was elected pres- 

 ident of the association for 1919 and Major 

 Bird T. Baldwin and Major Lewis M. Tei-man 

 members of the Council. 



Herbert Sidney Langfeld 



Secretary 



THE OPTICAL SOCIETY OF AMERICA 



The third annual meeting of tlie Optical Society 

 of America was held under the auspices of the 

 American Association for the Advancement of Sci- 

 ence in Baltimore, December 27. The program 

 consisted of the scientific papers listed below with 

 a Symposium on The Future of Applied Optics 

 and a business meeting. 



MORNING SESSION, 9:30 



The colorimetry of white surfaces: A. P. Pfund. 



The measurement of reflection and transmission 

 factors: M. Luckiesh. 



The design of lenses for aerial photography and 

 tests of calcium as a desiccator in optical instru- 

 ments: C. W. Fkedekick. 



Eetinat fatigue for luminosity with spectral 

 stimuli: L. T. Teoland. 



A new yellow dye and light filters made from it : 

 C. E. K. Mees and H. T. Clarke. 



The contraction of photographic images: F. E. 

 Eoss. 



Sefinements in spherometry : G. W. Moffitt. 



The proilem of magnification in fire control in- 

 struments, and The transmission of certain glasses 

 in the absorbent region: E. D. Tillyeb. 



A possible new lens material: P. G. Nutting. 



A chart method of testing photographic lenses: 

 L. E. Jewell. 



Monocular vs. binocular field glasses: E. P. 

 Hyde and Committee. 



A testing apparatus for stereoscopic vision: H. 

 Kellner. 



A one-term pure exponential formula for the 

 spectral distribution of radiant energy from a 

 complete radiator: I. G. Priest. 



Photoeleatrio spectrophotometry by the Null 

 method: K. S. Gibson. 



The protection of silvered surfaces: F. L. G. 

 Kollmobgbn. 



The proper type of absorption glass for an op- 

 tical pyrometer: P. I). Foote. 



Some characteristics of glasses in the annealing 

 range: A. Q. Tool and J. Valasek. 



Expansion coefficients of optical glasses: C. G. 

 Peters. 



afternoon session, 2 P.M. 



Symposium on Applied Optics, with Special Ref- 

 erence to the Future of the Optical Industry in this 

 Country. 

 I. The optical industry in wax time: Dr. F. E. 



Wright. 

 II. The readjustments of the industry to peace- 

 time demands for, and the future of manu- 

 facturing in: 



1. Optical glasses: Dr. 6. W. Morey. 



2. Photographic lenses and cameras : Mr. C. W. 



Frederick. 



3. Projection apparatus: Dr. H. P. Gage. 



4. Microscopes, field glasses and telescopes: 



De. H. Kellnee. 



5. Photographic goods: Dr. C. E. K. Mees. 



6. Special research apparatus: Mr. P. V. 



Wells. 



7. Spectacle lenses and optometry: Me. E. D. 



TiLLYER. 



8. Illuminating engineering: Dr. E. P. Hyde. 

 III. The future of applied optics and the future 



needs for: 



1. Education and training: Dr. Mees and 



Professor Southall. 



2. Scientific control in manufacturing: Dr. 



Kellner and Mr. Keuffel. 



3. Testing amd research : De. Nutting. 



EVENING session, 7:30 P.M. 



Business meeting. 



The meeting was an enthusiastic one attended by 

 about 80 persons. Eesolutions were passed and 

 committees appointed looking toward the closer 

 cooperation between designers, manufacturers and 

 users of optical goods of all kinds in America. 



The officers of the society for 1919 are: 



President — ^Dr. F. E. Wright, Geophysical Lab- 

 oratory, Washington. 



Vice-president — Professor F. K. Eichtymer, pro- 

 fessor of physics, Cornell. 



Secretary — ^Dr. P. G. Nutting, Westinghouse Ke- 

 search Laboratories. 



Treasurer — Mr. Adolph Lomb, Bausch & Lomb 

 Optical Company. 



Members at Large of the Council — ^Professor J. 

 P. C. Southall, Columbia University; Dr. L. T. 

 Troland, Harvard University; Dr. W. B. Lancaster, 

 Boston; Dr. H. E. Ives, Washington. 



The next general meeting of the society will be 

 held in connection with American Association for 

 the Advancement of Science next December. 

 P. G. Nutting, 



Secretary 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings o( the American Association for 

 the Advancement of Science 



Published every Friday by 



THE SCIENCE PRESS 



LANCASTER. PA. GARRISON, N. Y. 



NEW YORK, N. Y. 



Eucied in ihe po(l-«ffic< >t LucuMr, Pa., u Kcoad clan maUa 



