Vol. XII KBBRUARY 25, 1918 No. 8 



JOURNAL OF 



AGRICULTURAL 

 RESEARCH 



CONTKNTS 



Page 



Influence of Carbonates of Magnesiimi and Calciiun on 



Bacteria of Certain Wisconsin Soils - - - ► 463 



H. L. FULMER 



( CffifilribxiUon trom Wisconsin Agricultural Experiment Station ) 



Humus in Mulched Basins, Relation of Humus Content to 

 Orange Production, and Effect of Mulches on Orange 

 Production - -- - - - - - - 505 



CHARLES A. JENSEN 

 (Ccutribtttion from Bureau ol Plant Industry ) 



Relation of Kinds and Varieties of Grain to Hessian^pFly 



Injury - - - - - - - - - . 519 



JJOSES W. McCOLLOCH and S. C. SALMON 



( Contrlbntioa from Kansas Agricultural Experiment Station) 



PUBUSHED BY ADTHOMTY OF THE SECRETARY OF AGRICULTURE, 



WITH THE COOPERATION OF THE ASS0CL4TI0xN OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



WASMINGXON, t). C. 



wASMiNOToit : aovenNMCNT pmnTwa ornce : i«ib 



