February 23, 1917] 



SCIENCE 



195 



ity, Emulsifieation and Polar Setting in Surfaces. 

 "W. D. Harkins. 



The Variation of the Mobility of the Negative 

 Ion with Temperature in Air of Constant Density. 

 Henry A. Erikson. 



Intensity of Emission of X-rays from Metals. 

 C. S. Brainin. 



Extension of Eeeently Published Work on Ioni- 

 zation Potentials. J. C. McLennan. 



The Significance of Certain New Phenomena Ee- 

 eently Observed in Preliminary Experiments on 

 the Temperature Coefficient of Contact Potential. 

 (By title.) A. E. Hennings. 



The Energy of Emission of Photo-electrons from 

 Eilm-eoated and Non-homogeneous Surface. A 

 Theoretical Study. (By title.) A. E. Hennings. 



The Possibility of a Science of Experimental 

 Meteorology. B. P. Weinburg. 



A Proposed Method for the Photometry of 

 Lights of Different Colors. (By title.) Irwin G. 

 Priest. 



At the joint sessions on Wednesday with Sec- 

 tions B and C of the American Association for the 

 Advancement of Science, the following papers were 

 presented by invitation. 



Eadiation and Atomic Structure. (Presidential 

 address before the American Physical Society.) 

 E. A. Millikan. 



The Atom and Chemical Valence. G. N. Lewis. 



Molecular Eesonance and Atomic Structure. 

 Eobert W. Wood. 



The Evolution of the Elements as Belated to the 

 Structure of the Nuclei of Atoms. Wm. D. Har- 

 kins. 



The Eelation of Magnetism to the Structure of 

 the Atom. Wm. J. Humphreys. 



The Relations of Magnetism to Molecular Struc- 

 ture. Albert P. Wills. 



The Structure of Solids and Liquids, and the 

 Nature of Interatomic Forces. Irving Langmuir. 



Electromerism : A Case of Chemical Isomerism 

 Resulting from a Difference in Distribution of 

 Valence Atoms. Lauder W. Jones. 



The following responded to invitations to dis- 

 cuss the papers: Wm. Duane, A. C. Crehore and K. 

 G. Falk. Mr. Falk read the discussion of J. M. 

 Nelson. The discussion was then thrown open and 

 participated in by W. F. G. Swann, A. G. Webster, 

 M. I. Pupin and others. 



Many physicists attended the addresses Tuesday 

 evening of the retiring president of the American 

 Association for the Advancement of Science, Di- 

 rector W. W. Campbell, of the Lick Observatory, 

 on ' ' The Nebulte, ' ' and the special program of 



Section D, Friday evening, on ' ' The Inter-relation- 

 ship of Engineering and Pure Science. ' ' This ses- 

 sion was held at the Engineering Societies Build- 

 ing and was followed by a reception to visiting 

 members of the A. A. A. S. 



At a short business session the result of the 

 mail ballot for the election of officers was an- 

 nounced. E. A. Millikan, H. A. Bumstead, A. D. 

 Cole and J. S. Ames was reelected president, vice- 

 president, secretary and treasurer respectively. H. 

 A. Wilson and G. O. Squier are the new members of 

 the council. F. Bedell is reelected managing editor, 

 and O. M. Stewart, N. E. Dorsey and Wm. Duane 

 are elected on the editorial board of the Physical 

 Meview. The reports of the treasurer and the man- 

 aging editor were presented and on motion, ac- 

 cepted. (These will be printed and mailed to all 

 members.) It was announced that the next meet- 

 ing of the society would probably be in connection 

 with the Midwinter Convention of the American 

 Institute of Electrical Engineers at New York, 

 February 14-16. 



The subscription dinner on Thursday evening was 

 attended by about eighty, and was much enjoyed. 

 The exhibit of new apparatus and results in the 

 Commons Building was open from 4 to 6 P.M., 

 daily, and on Friday afternoon the instruction and 

 research laboratories for physics in Fayerweather 

 HaU were on exhibition with members of the teach- 

 ing staff in attendance. For these courtesies and 

 many others the society is indebted to Director 

 Geo. B. Pegram, who also had charge of the phys- 

 ics portion of the apparatus exhibit. 



The attendance at this meeting was record-ma- 

 king, about 325 at the joint sessions on Wednes- 

 day and about 200 at most of the ordinary ses- 

 sions. The number of new members elected at the 

 meeting was forty, which also probably estab- 

 lishes a new record. 



A. D. Cole, 

 Secretary 



SOCIETIES AND ACADEMIES 



THE BIOLOGICAL SOCIETY OF WASHINGTON 



The 562d regular and the 37th annual meeting 

 of the society was held in the Assembly Hall of the 

 Cosmos Club, Saturday, December 16, 1916, called 

 to order by President Hay at 8 p.m. with 23 per- 

 sons present. 



Annual reports of officers and committees were 

 submitted. 



Election of officers for the year 1917 resulted as 

 f oUows : 



President, W. P. Hay. 



