90 ENTOMOLOGICAL NEWS. [Feb., '17 



Species of Drosophila. THOMAS HUNT MORGAN (Columbia Univer- 

 sity), An Examination of the So-Called Process of Contamination of 

 Genes. ROBERT K. NABOURS (Kansas State Agricultural College), Two 

 Classes of Factors for Color Patterns in Paratctti.v. ALFRED H. 

 STURTEVANT (Columbia University), An Analysis of the Effect of Se- 

 lection on Bristle Number in a Mutant Race of Drosophila. ALEX- 

 ANDER WEINSTEIN (Columbia University), Coincidence of Crossing 

 Over and the Chromosome Theory of Linkage. 



PHYSIOLOGY. J. P. BAUMBERGER, The Food of Drosophila* 

 WM. L. DOLLEY, JR. (Randolph-Macon College), The Rate of Loco- 

 motion of Vanessa antiopa in Different Luminous Intensities and Its 

 Bearing on the Continuous Action Theory of Orientation (Zoologists). 

 S. I. KORNHAUSER (Northwestern University), Further Studies on 

 Changes in Thclia bimaculata Brought about by Insect Parasites 

 (Zoologists). N. E. MclNooo (Bureau of Entomology), Recognition 

 Among Insects (Zoologists). S. MERGULIS, The Hydrolytic Products 

 of Chitin (Physiological Society). BRADLEY M. PATTEN, Western 

 Reserve University, Reaction of the Whip-Tail Scorpion to Light 

 (Zoologists). C. H. RICHARDSON, New York City, The Response of 

 the House-fly to Certain Foods and their Fermentation Products. 

 V. E. SHELFORD, University of Illinois, Physiological Problems in the 

 Life-histories of Animals with particular reference to Seasonal Ap- 

 pearance; illustrated by Seasonal Succession of Spiders on a small 

 plot (Ecol. Soc.). A. FRANKLIN SHULL, Parthenogenesis and Sex in 

 Anthothrips (Naturalists). See also under General Subjects: Hewitt. 



ECOLOGY. CHARLES C. ADAMS, Syracuse University, An Ecologi- 

 cal Survey of Oneida Lake, New York (Ecol. Soc.). DR. J. BEC- 

 QUAERT, Recent Observations and Theories concerning the Origin of 

 Social Habits among Vespidae.* M. W. BLACKMAN and H. H. STAGE, 

 Ithaca, N. Y., On the Succession of Insects in Dying, Dead and De- 

 caying Hickory. FREDERIC E. CLEMENTS, University of Minnesota, 

 The Development and Structure of Biotic Communities (Ecol. Soc.). 

 ALFRED E. CAMERON, Dominion Entomological Service, Relation of 

 Soil Insects to Climatic Conditions (Ecol. Soc.). E. P.- FELT, Dis- 

 tribution of Gall Midges.* HENRY Fox, Bureau of Entomology, Dis- 

 tribution of Grasshoppers in relation to the Plant Formations of Tidal 

 Marshes (Ecol. Soc.). A. I. GOOD, Insect Collecting in Cameroon, 

 West Africa.* H. A. GOSSARD, Distribution of the Ohio Brood of 

 Periodical Cicada with Reference to Soil.* ROBERT F. GRIGGS, Ohio 

 State University, Notes on the Return of Animal Life to the Katmai 

 District, Alaska (Ecol. Soc.). CLYDE C. HAMILTON, Cornell Univer- 

 sity, The Importance of Soil Temperatures to Insects, as indicated by 

 their behavior (Ecol. Soc.). THOMAS J. HEADLEE, New Brunswick, 

 N. J., Some Facts Relative to the Influence of Atmospheric Humidity 

 on Insect Metabolism. A. D. HOPKINS, Latitude, Longitude and 



