EXPERIMENT STATION RECORD. 



Editor: E. W. ALLEN, Pii., D.. Assi.^ttant Director. 

 Assistant Editor : H. L. Knight. 



EDITORIAL DEPARTMP:NTS. 



Agricultural Chemistry and Agrotefhny — I^. W. Fetzer, Ph. D., M. D. 



MeteoroloRv. Soils, and FertilizersjJJ'- ^f ,?^^^- 



(R. \V. Trullinger. 



AgriciiUural Botany. Bacteriology, Vegetable Pathologyjjy JJ' ^l^^^' ^'^" ^' 



T.-"!^!.! ri„^^, JJ- I- SCHULTE. 



Lield Crops ((,_^j^,^.^^^^pj^ D. 

 Horticulture and Forestry — E. J. Olasson. 



Foods and Human Nutrition Ig ^- Langwortiiv, Ph. I)., I). Sc. 



IH. L. Lang. 

 Zootechny, Dairying, and Dairy Farming — II. Wkbstkr. 

 Economic Zook^gy and Entomology — W. A. Hooker, D. V. M. 



Veterinary Medicine l}^'-^V Hookkk. 

 I L. W. I' E rzEK. 

 Rural Engineering — R. W. Trullinger. LIMK 



Rural Economics — E. Mkrritt. i^EW ' 



Agricultural Education — C. H. Lane. 

 Indexes— M. D. Moore. 30TA^ 



. UAKi. 



CONTENTS OF VOL. XXXI, NO. 2. 



Editorial notes: Page. 



Formation of the American Association of Agricultural College Editors . . . 101 



Recent work in agricultural science 107 



Notes 197 



SUBJECT LIST OF ABSTRACTS. 



AGRICITLTURAL CHEMIST.RY — AGROTECHNY. 



Flavor of Roquefort cheese, Currie 107 



Influence of preliminary heating upon peptic and tryptic proteolysis, Bizano. 107 



The kinetics of invertase action, Michaehs and Menten 108 



The localization of betain in plants, Stanfek 108 



The chemistry and physiology of the leaves of the betel vine, Mann et al 108 



Chemical stuaics on the lime-sulphur-lead arsenate spray mixture, Ruth 108 



The titrimetric determination of ammonia, Winkler 108 



Method for determination of ammoniacal nitrogen with formaldehyde, Gaillot. 109 



A rapid method for determining formaldehyde, Gaillot 109 



Comparison of methods for dissolved oxygen, Sale and Skinner 109 



New precipitants for copper, Kober 109 



Determination of sulphur in certain culture media, Redfield and Huckle 109 



Comparative methods for determining sulphur in peptone, Redfield and Huckle. 109 



The determination of sulphiu- and chlorin in the rice plant, Thompson 110 



The determination of humus in heavy clay soils. Beam 110 



Influence of ammonium carbonate on humus, Maclntire and Hardy Ill 



Estimation of the lime requirement of soils, Bizzell and Lyon 112 



Estimation of citric acid-soluble phosphoric acid in Thomas slag, Neubauer 112 



The loss in lecithin phosphoric acid, Cohn 112 



Recommendations for revision of the section on honey and honey surrogates. . . 112 



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