Vol. XIII JUNE 17, 1918 No. 12 



JOURNAL OF 



AGRICULTURAL 

 RESEARCH 



CONTENTS 



Page 



Inorganic Composition of a Peat and of the Plant from 



Which It was Formed -_--_» (jo5 



C. F. MILLER 



( Contribution from Bureau ot Soita ) 



Digestibility of Com Silage, Velvet-Bean Meal, and Alfalfa 



Hay when Fed Singly and in Combinations - - 611 



P. V. EWING and F. H. SMITH 



(Contribution trom Texas Agricultural Experiment Station) 



Effects of Various Salts, Acids, Germicides, etc., Upon the 

 Infectivity of the Virus Causing the Mosaic Disease of 

 Tobacco --------- 619 



H. A. ALLARD 



(Contribution from Bureau of Plant Industry) 



A Study of the Physical Changes in Feed Residues Which 



Takes Place in Cattle During Digestion - - - 639 



P. V. EWING and L. H. WRIGHT 



(Contribution from Texas Agricultural Experiment Station ) 



Sunscald of Beans -------- 647 



H. G. MacMILLAN 



(Contribution from Bureau of Plant Industry) 



A Third Biologic Form of Puccinia graminis on Wheat - 651 



M. N. LEVINE and E. C. STAKMAN 



( Contribution from Minnesota Agricultural Experiment Station ) 



PUBUSHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. 



WITH THE COOPERATION OF THE ASSOCUTION OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



WASHINGTON, D. C. 



WAtHiNOTON : aovERNMCNT rniNTiNa orricE : ivit 



