January 28, 1921] 



SCIENCE 



97 



The equilibrium functions of the internal ear: S. 



S. Maxwell. 



Friday morning: 

 Differential survival of male and female dove em- 

 bryos in increased and decreased pressures of 



oxygen: a test of the metabolic theory of sex: 



Oscar Eeddle. 

 A decrease in sexual dimorphism during the course 



of selection with inbreeding : Chaeles Zeleney. 

 A dominant color mutation of the guinea-pig : 



Sewall Weight. 

 Some conclusions regarding the influence of the 



endocrine glands upon amphibian development: 



Bennet M. Allen. 

 Chromosomes and the life cycle of Bydatina senta: 



A. Franklin Shull. 

 Inheritance of eye-defects induced in rabbits: M. 



F. Guyer and E. a. Smith. 

 The hearing of Mendelism and mutation on the 



theory of natural selection: C. C. Nutting. 

 The inheritance of size in rats: Heman L. Ibsen. 

 Inheritance of a secondary sexual character and 



the effects of lethal factors in Colias philodice: 



John H. Geeould. (Eead by title.) 

 A recessive mutation in ha^molymph pigment in 



Colias philodice: John H. Gekould. (Eead by 



title.) 

 Duplicate factors for cotyledon color in soy beans: 



C. M. WooDWORTH (introduced by J. A. Detlef- 



sen). 

 Some variation in color pattern of mammals : Leon 



J. Cole and Jessie Megeath. 

 Inheritance of checJcs and bars in pigeons: Sarah 



V. H. Jones (introduced by Leon J. Cole). 



Friday afternoon: 

 Selective fertilization and the rate of pollen tube 



growth: D. F. Jones. 

 Genetic studies in Crepis: E. B. Babcock. 

 A quantitative study of mutation in the second 



chromosome of Drosophila: H. J. Mullee. 

 A genetic analysis of "low crossover stoclc" pro- 

 duced by selection: Elmee Eobeets (intro- 

 duced by J. A. Detlefsen). 

 The inheritance of small deviations from bilateral 



symmetry: F. B. Sumnee. (Eead by title.) 

 Belation between chaff color and pubescence in a 



cross between wheat and emmer: H. H. Love. 



(Eead by title.) 

 The mutant type "crossveinless" in Drosophila 



eirilis and D. melanog aster : Alexander Wein- 



stein and C. B. Bridges. 



A. Franklin Shull, 



Secretary 



THE AMERICAN SOCIETY OF ZOOL- 

 OGISTS 



The American Society of Zoologists held its 

 eighteenth annual meeting at the University of 

 Chicago in conjunction with Section F of the 

 American Association for the Advancement of Sci- 

 ence and in association with other biological so- 

 cieties on December 28, 29 and 30, 1920. 



Due the absence of the secretary, H. V. Neal 

 was elected secretary pro tern. 



The Constitution was amended by adding a new 

 type of membership as follows: 



Foreign zoologists, not members of this Society, 

 may be elected Honorary Fellows upon unanimous 

 recommendation of the Executive Committee by a 

 majority vote of the members present at any meet- 

 ing of the Society. Honorary Fellows shall not be 

 required to pay dues. 



The By-Law providing for afaiiation with the 

 American Society of Naturalists was amended to 

 eliminate this affiliation. 



The following were elected to membership in the 

 Society: Eoyal N. Chapman, University of Min- 

 nesota; J'ames Arthur Dawson, Dalhousie Univer- 

 sity; Leslie Clarence Dunn, Connecticut Agricul- 

 tural Station; Ernest Melville DuPorte, MacDonald 

 College; Charles McLean Eraser, University of 

 British Columbia; William Marion Goldsmith, 

 Southwestern College; Norman McDowell Grier, 

 Washington and Jefferson College; Selig Hecht, 

 Creighton Medical College; Walter N. Hess, De- 

 Pauw University; Minna E. Jewell, Milwaukee- 

 Downer College; Thestle T. Job, Loyola University 

 School of Medicine; Eokusa;buro Kudo, University 

 of Illinois; Ealph S. Lillie, Department of Pure 

 Science, Nela Eesearch Laboratories; William A. 

 Lippincott, Kansas State Agricultural College; 

 Henry G. May, Ehode Island State College and 

 Agricultural Experiment Station; Irene McCul- 

 lough, Sophie Newcomb College; Eichard Anthony 

 MutJtkowski, University of Idaho; J. M. D. Ohn- 

 stead, Toronto University; Thomas Elliott Snyder, 

 Bureau of Entomology U. S. Department of Agri- 

 culture; Wilbur Willis Swingle, Yale University; 

 Charles Vincent Taylor University of California; 

 Clarence Lester Turner, Beloit College; Asa Orrin 

 Weese, University of New Mexico. 



Among other items the secretary reported the 

 death of two members, E. L. Michael and George 

 D. Allen. The membership roll before the election 

 of new members contained 305 names of members 

 in good standing. The American Association for 

 the Advancement of Science had recognized elec- 

 tion to membership in the society as a certification 

 of eligibility for Fellowship in the association. 



