EXPERIMENT STATION RECORD. 



Editor: E. W. ALLEN, Th. D., Assistani Director. 

 Assistaut Editor : H. L. Knight. 



EDITORIAL DEPARTMENTS. 



Agricultural Chemistly and Agrotechny^L. W. Fetzer, Ph. D. 



Meteorology, Soils, and Fertilizers — W. H. Beal. 



Agricultural Botany and Vegetable Pathology — W. H. Evans, Ph. D. 



„. 1 , ^ f J. I. Schulte. 



FieldCropsjj Q j^^^^^^_ 



Horticulture and Forestry — E. J. Glasson. 



Foods and Human Nutrition — C. F. Langworthy, Ph. D. 



Zootechny, Dairying, and Dairy Farming — E. W. Morse. 



Economic Zoology, Entomology, and Veterinary Medicine — W. A. Hooker. 



Rural Engineering . 



Rural Economics — J. B. Morman. 

 Agricultural Education — D. J. Crosby. 



CONTENTS OF VOL. XXII, NO. 3. 



Editorial notes: 



The economic condition of agriculture 201 



The need for studies in rural economics 203 



Recent work in agricultural science 208 



Notes 296 



SUBJECT LIST OF ABSTRACTS. 



agricxiltural chemistry — agrotechny. 



Relation of investigations on colloids to agricultural chemistry, Ehrenberg. . . . 208 



Colloid substances in cultivated soil, Rohland 208 



Notes on colloid chemistry as applied to soil investigation, Ehrenberg 208 



( 'olloid-chemical processes in wood formation, Wislicenus 208 



The question of the nomenclature of chlorophyll chemistry, Marchlewski 208 



Protein hydrolysis by hydrofluoric acid, Hugounenq and Morel 208 



The action of dilute acid on edestin, Petrow 208 



The occurrence of adenin in bamboo sprouts, Totani 209 



Contributions to a knowledge of rennet action, Van Dam 209 



The influence of chemicals in stimulating the ripening of fruits, Vinson 209 



Soy beans and soy bean oil, Holland 209 



The acidity, sulphite content, and color of gluten feed, Goldsmith 210 



Chemical conversion tables. Battle and Gascoyne 210 



Gravimetric estimation of nitric acid, Busch 210 



Busch's nitron process, Pooth 210 



[Colorimetric method for the determination of phosphorus], Gibson and Estes. . 210 



Determination of phosphorus in phosphates, Jannasch and Jilke 211 



Phosphate feed-lime, Kellner 211 



The quantitative separation of calcium from magnesium, Blasdale 211 



Determination of sulphuric acid as barium sulphate, Sacher 211 



Estimation of potassium in soils as phosphomolybdate, De Sornay 211 



A modification of Esbach's albuminoid test, Kwilecki 211 



Methods for fat analysis. Holland p2 



A color reaction for fats, Schlumberger ;•-.--- "^^ 



Determination of milk eugar by Michaelis and Rona iron method, Oppenheim . 212 



I 



