The American Genetic Association 



Pretident, DAVID FAIBCHILD Vtee-Pretident, W. E. CASTLE SeerOary, E. W. SHEETS 



Treaturer, BOYD TAYLOR 



Honorary YicfPr$ndenU: ALEXANDER GRAHAM BELL and MRS. E. H. HARRIMAN 

 Fira PretidtHl JAMBS WILSON, Firit Seeretary, WILLET M. HAYS 



BdUcrial Beard: 



WILSON POPENOB C. E, LEIGHTY PAUL POPENOE 



T. H. KEARNEY GEO. M. DARROW 



Memben of the Council are ez-officio memben of the Editorial Board. 



COUWCIL 



W. E. CASTLE, Profeasor of Zoology, Harvard University, and Research Assooiate of the Cameeie Institiitk>D of Waihinxton 

 Cambridge, Mass. 



G. N. COLLINS, Botanist, Bureau of Plant Industry, U. 8. Departntent of Agriculture, Washington, D. C. 



F. COOK, Bionomist in Charge of Office of Crop Acclimatisation, Bureau of Plant Industry, U. S. Departmental Agriculture, 

 'Wa8hington,lD. C. tSi 



DAVID FAIRCHILD, Agricultural Explorer in Charge of Foreign Seed and Plant Introduction, Bureau of Plant [Industry, 

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



GILBERT GROSVENOR, President National Geographic Society, Washington, D. C. 



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



E. W. SHEETS, Acting Chief of Animal Husbandry Divbion, Bureau of Animal Industry, U. S. Department of ^Agriculture. 

 Washington, D. C. 



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



SEWALLTSVRIGHT, Senior Animal Husbandman in Animal Genetics, Bureau of Animal Industry, U. 8. Department of Agri- 

 culture, Washington, D. C. ^ 



COMMITTEES ON RESEARCH 



PUnt Rri>f>din(r CHARLES R.'STOCKARD, Secretary, Professor of Anat- 



x-iojii orecuuig ^^^ p^^^^U ^^^^^ College, New York, N. Y. 



WALTER T. SWINGLE. Chairman, Physiologist in Charge C. C LITTLE Carnegie M^ Washington Cold 



of Crop Physiology and Breeding Investigations, Bureau , a nPTT ppww Snf^ln, Af nJ;»;«. rviWo «f i^^; 



of Plant Industry. U. S. Department of Agriculture, J- ^^c^t^^e^uS' ElinS 



i R^TmiT°niS;?nr nf T ihoratori« Npw York Botanical E. N. WENTWORTH, Armour A Company, Chicago, ni. 



(^Jd^n New York ^'*°°'^**°"^' ^®" ^°^'^ iiotanical g ^ McILHENNY, Avery Island, La. 



HERBERT' J. WEBBER, Secretary, Professor of Plant 



Breeding, University of California, Director of Citrus Euffenica 



Substation and Dean of Graduate School of Tropical •» 



HARWv'l^'srONrE'slddf'iUinois FREDERICK ADAMS WOODS, Chairman, Lecturer on 



W HAnOT n HTIMF GW Sa St Marv Nurseries Glen ^^°^°ey- Massachusetts Institute of Technology. 



HAROLD HUMb, Glen Baint Mary Wurseries, Uien ^jjqlf MEYER, Vice-Chairman, Professor of Psychiatry, 



R. A EMERSON?* Professor of Plant Breeding, Cornell i°^^ Hopkins University, and DirectM of Henrv 



Un.>™Ithaca, N. Y. RfcrM'"" '"'' °^ ^°^''"" °°^'**'' 



^- A^icuhufal a;oSen?s£ion Newfen^n^"""* CHARLES B.' DAVENPORT, Secretary, Director Depart- 



A ri^wAM^rr vlZ^^^lvR'n^Zrim^^^ ment of Experimental Evolution (Carnegie Institution 



tufe RWereide S Department of Agricul- ^^ Washington). Cold Spring Harbor, Long Island. 



HOMER FOLKS, Secretary, State Charities Aid Association, 



Animal Breeding New York City. 



THOMAS W. SALMON, Medical Director, National Com- 



LEON J. COLE, Chairman, Professor of Genetics, University mittee for Mental Hygiene, New York City. 



of Wisconsin, Madison, Wis. EDWARD L. THORNDIKE, Professor of Educational 



T 8. PALMER. Vice-Chairman, Assistant Chief of Biological Psychology. Columbia Univf-.rsity. 



Survey, Washington, D. C. MRS. CHARLES GARY RIMSEY, New York, N. Y. 



