n CONTENTS. [Vol. 41 



Page. 



Sodium sulphite analyses, Van Heurn and Bertels 112 



Estimation of cyanogen in ammonia liquor, Spielmann and Wood 113 



Fat extraction apparatus, Griffiths-Jones 113 



Acidimetric titration of grain extracts and amino acids, Birckner 113 



Meat extracts, their composition and identification, Emery and Henley 113 



New method for vanillin in vanilla extract, Dox and Plaisance 114 



Evaluation of coconut and palm oils, Vizern and Guillot 115 



Kevision of copper phosphate method for sugar, Folin and Peck 115 



Analysis of commercial saccharin, I-II, Richmond and Hill 115 



Determination of the amylolytic power of saliva, Grimbert 115 



Colorimetric determination of nonprotein nitrogen, Grigaut and Guerin 116 



Determination of small quantities of urea in blood, Grigaut and Guerin 116 



Procedure for the volumetric micro determination of liiwids. Bang 116 



The micro determination of blood lipoids. Bang 116 



The evaporation of vegetables, Ci'uess 116 



The sun drying of vegetables, Howard 116 



Sirup from sugar beets. Parsons 117 



Utilization of Arum as food, for starch, alcohol, etc., Pantanelli 117 



The preparation of xylose from corncobs, Monroe 117 



Salvaging rain-damaged prunes, Cruess 117 



Evaporators for prune dryisg, Cruess 117 



Scientific production, classification, and manufacture of rubber, Van Pelt_ 118 



METEOKOLOGY. 



Relation between vegetative and frostless periods, Kincer 118 



Increase of precipitation with altitude, Henry 119 



The rainfall of France: Variations with altitude, Mathias 119 



Urban r. suburban temperatures, Redway 120 



Classification of clouds 120 



Monthly Weather Review 120 



Climatological data for the United States by sections 121 



General classification of meteorological literature. Brooks 121 



SOILS — l^RTILIZEiES. 



Studies in reversibility of colloidal condition of soils, Beaumont 121 



H-ion concentration — soil type — common potato scab, Gillespie and Hurst- 123 



Variability in soils and its significance. — II, Waynick and Sharp 124 



[Report of] soil investigations 124 



Azofication, Greaves 124 



Studies on nitrification in natural soils and its importance, Hesselman — 125 



Elffect of regeneration on formation of nitrates in soil, Hesselman 125 



The solubility of the soil potash in various salt solutions, Tressler 126 



Relation of fluoi-in in soils, plants, and animals, Steiukoenig 126 



Extent and character of saline lands of Madras Presidency, Harrison 127 



A peculiar alkaline tract in South Arcot district. Ramaswami Sivan 127 



The alkali content of soils as related to crop growth, Shutt and Smith — 127 



Soil survey of Faulkner County, Ark., Deeter and Cohn 127 



Soil survey of the Anaheim area, Cal., Eckmann et al 127 



Soil survey of Shelby County, Ky.. A'an Duyne, Schoenmann, and Averitt_ 12S 



Soil survey of Calhoun County, Mich., Rogers and Smith 128 



Soil survey of Amite County, Miss., Goodman et al 128 



Soil survey of Callaway County, Mo., Krusekopf, Agee, and Hall 128 



Soil survey of Oswego County, N. Y., Mooney et al 129 



Soil survey of Benton County, Wash., Kocher and Strahorn 129 



rCultivation and soil moisture], Ringelmann 129 



The washed liinds of Indiana : A preliminary study, Fisher 130 



[Report of soil work in Georgia] 130 



[Report of soils work at the Delaware Experiment Station, 1918], Manns_ 130 



Results of fertilizer experiments in Arkansas, Hungerford 130 



Soil test experiment at Aroostook farm [1918], Woods 130 



[The progress of soil investigations in India, 1917-18] 131 



Some notes on manures in southern India, Harrison 131 



