JOINT COMMITTEE ON POLICY AND MANUSCRIPTS 
FOR THE UNITED STATES DEPARTMENT 
OF AGRICULTURE 
E. W. ALLEN, Chairman 
Chief, Office of Experiment Stations 
C. L. MARLATT 
Chairman, Federal Horticultural Board, and 
Associate Chief, Bureau of Entomology 
C. L. SHEAR 
Senior Pathologist in Charge, Plant Disease 
Survey and Pathological Collections 
FOR THE ASSOCIATION OF LAND-GRANT 
COLLEGES 
J. G. LIPMAN 
Dean, New Jersey College of Agriculture, and 
Director of Experiment Station 
H. W. MUMFORD 
Dean, Illinois College of Agriculture, and 
Director of Experiment Station 
S> B. HASKELL 
Director Massachusetts Experiment Station 
EDITORIAL SUPERVISION 
M. C. MERRILL 
Editorial Chief of Publications, U. S. Department of Agriculture 
All correspondence regarding articles from State Experiment Stations should be 
addressed to J. G. Llpman, New Jersey Agricultural Experiment Station, New 
Brunswick, N. J. 
Published on the first and fifteenth of each month. This volume will consist of 
twelve numbers and the Contents and Index 
Subscription price: Domestic, $ 4.00 a year (two volumes) 
Single numbers, 20 cents 
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If separates are desired in quantity, they should be ordered at the time the manu¬ 
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exhausted; in either case they will be supplied at cost. 
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separates to the Superintendent of Documents, Government Printing Office, Wash¬ 
ington, D. C. 
