The American Genetic Association 



Prtsidtnl, DAVID FAIRCHILD. VU«-Preiidtnt, W. E. CASTLE. Stcrttary, GEORGE^M. ROMMEL. 



TrMturtr, BOYD TAYLOR. 



Bnutary Viet-PretidtiOs: ALEXANDER GRAHAM BELL and MRS. E. H. HARRIMAN 

 Pittt Pruidtnt, JAMES WILSON. Pirrt Steretary. WILLET M. HAYS. 



Editorial Board: 



G. N. COLLINS SEW ALL WRIGHT PAUL POPENOE 



WALTER VAN FLEET E. W. SHEETS FREDERICK ADAMS WOODS 



Uonatint Editor. OLIVER OLSON 



COUNCIL 



W. E. CASTLE, Profesaor of Zoology, Harvard Univenity, and Research Associate of the Carnegie InsUtotion of 

 WasUngton; Cambridge, Mass. 



G. N. COLLINS, Botaaist, Bareau of Plant Industry, D. S. Department of Agriculture, Washington, D. C. 



O. F. COOK, Bionomist in Charge of Office of Crop Acclimatization, Bareau of Plant Industry, U. S. Department 

 of Agriculture, Washington, D. C 



DAVID FAIRCHILD, Agricultural Explorer in Charge of Foreign Seed and Plant Introduction, Burean of Plant 

 Industry, U. S. Department of Agriculture, Washington, D. C. 



J . H. KEMPTON, Bureau of Plant Industry, U.S. Department of Agriculture, Washington, D. C. 



GEORGE M. ROMMEL, Chief of Animal Husbandry Divisioa, Bureau ot Animal Industry, U. S. Department of 

 Agriculture, Washington, D. C. 



T. H. KEARNEY, Physiologist in Charge, Alkali and Drought-ResisUnt Plant Breeding Investigations, Bureau of 

 Plant Industry, U. S. Department oiAgriculture, Washington, D. C. 



FREDERICK ADAMS WOODS, Lecturer on Biology, Massachusetts Institute of Technology. 



SEWALL WRIGHT, Senior Animal Husbandman in Animal Genetics, Bureau of Animal Industry, U. S. Department 

 of Agriculture, Washington, D. C. 



COMMITTEES ON RESEARCH 



Plant Breeding CHARLES R. STOCKARD, SecreUry, Professor of 



i-iani meeamg Anatomy. Cornell Medical CoUege, New York, 



WALTER T. SWINGLE, Chairman, Physiologist N. Y. ^^^ r.,«.«. T„.t;».,n«n nf w..hin<rtnn 



in Charge of Crop Physiology and Breeding Investiga- C. C. LITTLE. CwnegielnsbtuUon of Washington, 



Uons, Bureau of Plant Industry, U. S. Department of - ^^^^?^?^lv<tv^'^^?lJ^^^'rl;,y^i^ PnlW. nl 



Agriculture, Washington, D. C J- A- .DETLEFSEN, Professor of GeneUc*. College of 



A. B. STOUT. Director of Uboratorie^ New York BoUn- _ Ag"^/t"re, Urbana, Dlinms. _ rMr.,n 



ical Garden. New York. E. N. WENTWORTH. Armour & Company. Chicago, 



HERBERT J. WEBBER, Secretary. Professor of ^ H' w^tt wwtsimv a„.™ T.i.o,t T^ 



Plant Breeding, University of CaUfomia. Director E. A. McH^HENNY, Avery Island, La. 



of Citrus Substation and Dean of Graduate School _ , 



of Tropical Agriculture, Riverside, Cal. iiUgeniCS 



HARVEY T. SCONCE. SideU. lUinoU. FREDERICK ADAMS WOODS. Chairman, Lecturer 



H. HAROLD HUME, Glen Saint Mary Nurseries. on Biology. Massachusetts Institute of Technology. 



Glen Saint Mary. Fla. ADOLF MEYER, Vice<hairman. Professor of Psy- 



R. A. EMERSON. Professor of Plant Breeding. Cornell chiatry. Johns Hopkins University, and Director of 



University, Ithaca, N. Y. Henry Phipps Psychiatric Clinic, Johns Hopkins Hos- 



D. F. JONES. Professor of Plant Breeding, Connecticut pjt^] Baltimore, Md. 



Agricultural Experiment Sution, New Haven, Conn. CHARLeS B. DAVENPORT, Secretary, Director 



A. D. SHAMEL, Pomologist, U. S. Department of Department of Experimental Evolution (Camet^e 



Agriculture, Riverside, Cal. Institution of Washington), Cold Springs Harbor. 



Lonn Island, N. Y. 

 HOMER FOLKS. SecreUry, SUte Charities Aid Asao- 



Animal Breedinsr ciation. New York Citv. .... 



Auimm oreeamg THOMAS W. SALMON, Medical Director National 



LEON J. COLE. Chairman. Professor of Genetics. Committee for Mental dvfiene New York City. 



University of Wisconsin. Madison. Wis. EDWARD L. THORNDIKE. Profesww of Educational 



T. S. PALMER, Vice-chairman, Assistant Chief of Psycholofcy, Columbia University. 



"Biological Survey, Washington, b. C. MRS. CHARLeS CARY RUMSEY. New York. N. Y. 



'Ijtortt^StatrVuhiithin^^rtnj, Meaaska, Wis. 



