EXPERIMENT STATION RECORD. 



Editor: E. W. ALLEN, Ph. D., Chief, Office of Experiment Stations. 

 Associate Editor : H. L. Knight. 



Meteorology, Soils, and Fertilizers {JJ^- ■^* ^^'^^■ 



EDITORIAL DEPAKTMENTS. 



Agricultural Chemistry and Agrotechny — Sybil L. Smith. 



H. Beal. 

 W. Teullingek. 



Agricultural Botany, Bacteriology, and Plant Pathology f ^^-" -^ boyd' 



Field Crops — J. D. Luckett. 



Horticulture and Forestry — E. J. Glasson. 



Economic Zoology and Entomology — W. A. Hooker, I). V. M. 



T7, , , T-T T^T i- •(-• fC. F. Langworthy, Ph. D., D. Sc. 



Foods and Human Nutrition jg^^j^j^ j^ Sjiith 



Animal Husbandry, Dairying, and Dairy Farming — F. J. Kelley. 



veterinary Memc.no {«-,*H~;S„. 

 Rural Engineering — R. W. Teullingeb. 

 Rural Economics!]^; Merkttt. 



Louise Maebut. 

 Agricultural Education l^f^^i™' 

 Indexes — Amelia B. Deans. 



Spethmann. 



CONTENTS OF VOL. 41, No. 8. 



Editorial notes : Page. 



The human factors in agriculture 701 



Research aspects of rural economics and social science 705 



Recent work in agricultural science 710 



Notes 798 



SUBJECT LIST OF ABSTRACTS. 



agkicultukal chemistry — agrotechny. 



A study of the oil from sumac (Rhus (jlabra), Brubaker 710 



The composition of the fruit of the Virginia creeper, Beal and Gleuz 710 



The indigenous tans and vegetable dyestuffs of New Zealand. — II, Aston_ 710 



Manipulations of applied analytical chemistry, Francois 710 



Electrometric titrations, with reference to iron, Hostetter and Roberts... 711 



The hydrochloric acid color method for determining iron, Hostetter 711 



Genesis of petroleum as revealed by nitrogen constituents, Mabery 711 



Regeneration of Nessler's solution, Pullman 712 



Inaccuracies in Hausmann's method, Jodidi and Moulton 712 



Modified Benedict method for sulphur, Halverson 712 



Estimation of small quantities of lead in foods, Warren 713 



Estimation of quantity of meat in sausages, Stubbs and More 713 



The analysis of sausages, meat pastes, and army rations, Stokes 714 



Rapid method for determination of fat in cocoa and cho(!olate, Hughes_ 714 



A chemical test to distinguish between cufiiein and theobromin, Stroup_ 714 



T 



