EXPERIMENT STATION RECORD. 



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

 Assistant Editor : H, L. Knight. 



EDITORIAL DEPARTMENTS. 



Agricultural Chemistry and Agroteclmy — E. H. Nollau. 

 Meteorology, Soils, and Fertilizers {W- H- ^eal^^^^^^ 



Agricultural Botany, Bacteriology, and Plant Pathology {^- ^- gj^o^^' ^^' ^ 



T- 1 1 r-< [J. I. SCHULTE. 



Held Crops I j^LucKETT. 



Horticulture and Forestry — E. J, Glasson. 



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



Foods and Human Nutrition {g/^^A^^^f^^OETHY, Pb. D., D. Sc. 



Zootechny, Dairying, and Dairy Farming |,^j j^ Moore 



Rural Engineering — R. W. Trullingeb. 

 Rural Economics— E. Mereitt. 



Agricultural Education/^,- ^- e^^^" 

 " IM. T. Spethmann. 



Indexes — M. D. Mooee. 



CONTENTS OF VOL. 37, NO. 7. 



Editorial notes: 



The Thirty-first Annual Convention of the Association of American Agri- Page. 



cultural Colleges and Experiment Stations 601 



Recent work in agricultural science 612 



Notes 700 



SUBJECT LIST OF ABSTRACTS. 



agricultural chemistry — agrotechny. 



Isolation of cyanuric acid from soil, Wise and Walters 612 



Analysis of ragweed pollen, Heyl 612 



The pungent principles of ginger. — I, A new ketone, zingiberone, Nomura 612 



Gingerol and paradol. Nelson 612 



Microorganisms and heat production in silage fermentation, Hunter 613 



The citric acid fermentation of Aspergillus niga-, Currie 613 



Influence of certain electrolytes on hydrolysis of starch, Sherman and Walker. 614 



A noteworthy effect of bromids upon the action of malt amylase, Thomas 614 



A handbook of organic analysis, Clarke 614 



A titration flask, Bezzenberger 614 



The estimation of sulphur in plant material and soil, Olson 614 



Influenceof calcium carbonate on Dyer's method, Jatindra Nath Sen 615 



Phosphoric acid determination in phosphate rock, Semple 6 ! •> 



Determination of carbonates in limestone and other materials, Barker 0x8 



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Kilt, 



