Feekuart 13, 1920] 



SCIENCE 



171 



The vascular anatomy of dimerous and trimerous 

 seedlings of Fhaseolus vulgaris: J. Arthuk 

 Harris, E. W. Sinnott and J. Y. Pennt- 



PACKEE. 



Genetic investigations in Crepis: E. B. Babcock 



(re^d by title.) 

 Selationships among the genes for color variation 



in rodents: L. C. Dunn (read by title.) 

 Dice casting and pedigree selection: H. H. 



Laughlin. 

 Known matings in a species with heteromorphic 

 homologous chromosomes; reconibinations ob- 

 tained in F^ and F^: E. Eleanor Carothers. 

 The relation of the somatic chromosomes in (Eno- 

 nothera LamarcTciana and 0. gigas: E. T. Hance. 

 Concerning the inheritdnce of hroodiness in do- 

 mestic fowl: H. D. GooDAiiE (read by title.) 

 Heredity of tioining from the paternal side: C. B. 



Davenport. 

 Notes on the human sex ratio: C. C. Little. 

 An experiment on regulation in plants: E. N. 



Harvey (read by title.) 

 A series of allelomorphs in Drosophila with non- 

 quantitative relationships: H. J. Mullee. 

 The rate of evolution : E. G. Conklin. 



The Naturalists' dimier was held on the even- 

 ing of December 30 in the dining hall of the 

 Graduate School of Prineetooi University with 

 eighty-itwo in attendance. The presidential address 

 by Edward M. East was entitled "Population." 

 The ofScers of the society for 1920 are: 

 President — Jacques Loeb, Rockefeller Institute 

 for Medical Eesearch. 



Vice-president — Bradley M. Davis, University of 

 Michigan. 



Secretary — A. Franklin ShuU, University of 

 Michigan (1920-22). 



Treasurer — J. Arthur Harris, Carnegie Station 

 for Experimental Evolution (1918-20). 



Additional memiers of the Executive Commit- 

 tee— J'ohn H. Gerould, Dartmouth College (1920) 

 George H. Shall, Princeton University (1918-20) 

 Wdlliam E. Castle, Harvard University (1919-21) 

 Edward M. East, Harvard University (1920-22) 

 Bradley M. Davis, 



Secretary 



THE AMERICAN PHYSICAL SOCIETY 



The twenty-first annual meeting (the 101st reg- 

 ular meeting) of the American Physical Society 

 was held at Soldan High School in St. Louis, Mis- 

 souri, on December 30, 31, 1919, and January 1, 

 1920, in afaiiation with Section B — Physics — of 



the American Association for the Advancement of 

 Science. 



At the business session held on December 31, 

 1919, officers for 1920 were elected as follows: 



President — J. S. Ames. 



Vice-president — Tleodore Lyman. 



Secretary — D. C. Miller. 



Treasurer — G. B. Pegram. 



Managing Editor — P. Bedell. 



Councillors — ^F. B. Jewett and Max Mason. 



Members of the Editorial Board — E. L. Nichols, 

 C. M. Sparrow and "W. F. 6. Swann. 



The question of the relation of the society to the 

 work lof the trustees for the Preparation of Crit- 

 ical Tables of Physical and Chemical Constants 

 was brought before the society; after discussion it 

 was, by general consent, referred to the president, 

 the councillor and the trustee representing the so- 

 ciety, for such action as may seem best. 



At the meeting of the council held on December 

 30, 1919, the following elections were made: to 

 regular membership, T. H. Gronwall, E. H. Ken- 

 nard, Henry A. McTaggart; to associate member- 

 ship, William H. Agnew, W. H. Bair, Vola P. 

 Barton, Henry M. Brook, J. T. Lindsay Brown, 

 John A. David, E. C. Gaskill, Charles W. Hender- 

 son, F. F. Householder, Teizo Isshiki, Charles S. 

 Jewell, P. Kirkpatrick, F. W. Kranz, Charles P. 

 Miller, Greorge S. Monk, Chalmer N. Patterson, 

 Herbert J. Plagge, Geo. E. Raburn, S. P. Shackle- 

 ton, George C. Southworth, John Alden Terrell, 

 John A. Tobin, A. P. Vanselow, E. E. Zimmer- 

 man; transferred from associate to regular mem- 

 bership, Harold D. Babcock, Clifton G. Found, R. 

 C. Gibbs, J. A. Gray, Frank B. Jewett, Edwin C. 

 Kemble, Fred Loomis Mohler, Lindley Pyle, C. V. 

 Raman, Paul E. Sabine, F. B. Sil^ee, Elmer H. 

 Williams. 



On Tuesday afternoon, December 30, 1919, the 

 president, J. S. Ames, delivered an address on 

 "Einstein's theory of gravitation and some of its 

 consequences." This was a masterly presentation 

 of the development and conclusions of this theory, 

 and it was listened to by the largest audience of 

 the meetings. 



The session on the afternoon of Wednesday, De- 

 cember 31, 1919, was under the auspices of Sec- 

 tion B — Physics — of the American Association of 

 the Advancement of Science. The retiring chair- 

 man of Section B, Dr. G. F. Hull, gave an address 

 on ".Some aspects of physics in war and peace." 

 Following this there was a symposium of four 

 papers on "Phenomena in the ultra-violet 



