II CONTENTS. [Vol. 36 



Page. 



Sodium sulphate in Gunning modifications for determining nitrogen, Latshaw. . 14 



A modification of McCrudden's method for calcium, Winter 14 



A table for values of carbon in carbon dioxid, Loomis . 15 



Rapid method for accurate determination of total carbon in soils, Salter 15 



The reducing action of distillates from certain carbohydrates, Atkinson 15 



The rate of ammonia distillation from water, Bruckmiller 15 



Melting-point determination of fats and waxes, Golodetz 15 



Detection of pigments in oleomargarine and butter. Palmer and Thrun 16 



Estimation of polysulphids and thiosulphate in lime-sulphur solutions, Averitt. 16 



Sulphur fungicides, Gray - 16 



Methods of preparation and relative value of Bordeaux mixtm-es, Butler 16 



The sterilization of fruit and vegetables for the home 17 



The sterilization of fruit and vegetables for the market 17 



The recovery of potash from alunite, Waggaman and Cullen 17 



Hemp hurds as paper-making material, Dewey and Merrill 17 



Effects of moisture introduced into the digester in cooking soda pulp, Wells 17 



METEOROLOGY. 



Department of meteorologj', Chm-ch, jr 17 



A method of forecasting the maximum summer level in Lake Tahoe, Alciatore 18 



The persistence of wet and dry weather, Newnham 18 



Monthly Weather Review 19 



The fertilizing value of rain and snow, Shutt 19 



Meteorological ob8er\'ations at Massachusetts Station, Ostrander and Sims 19 



SOILS — FERTILIZERS . 



Soil survey of Jefferson County, Ark., Tillman et al 20 



Kankakee County soils, Hopkins et al 20 



Reconnoissance soil sur^'ey of part of north-central Wisconsin, Geib et al 20 



Studies on soils, I, Rice 21 



Studies on soil colloids. I, Flocculation of soil colloidal solutions, Wolkoff 21 



Bacterial numbers in soils at different depths and seasons, Waksman 21 



Some factors that influence nitrate formation in acid soils, Fred and Graul. ... 22 



Studies in sulfofication, Brown and Johnson 22 



Some effects of litter on the fermentation of manure, Tottingham 23 



Fertilizer experiments, Shutt 24 



Protein decomposition in soils, Lathrop 25 



Potash salts, 1915, Phalen 26 



Oxidation of sulphur as increasing availability of phosphates, Lipman et al 26 



The influence of liming on the productiveness of certain soils, Shutt 26 



Fertilizing materials, Shutt 27 



AQRICTJLTURAL BOTANY. 



Agriculture and native vegetation in Peru, Cook 27 



Vegetation of a desert mountain range as conditioned by climate, Shreve 27 



Characters of plants grown in salt water and heredity, Lesage 27 



Dissimilarity in inheritance from different parts of plant, Bateson and Pellew. . 27 



A hydrid between Tripsacum and Euchlasna, Collins and Kempton 27 



Patrogenesis in cross of Tripsacum and Euchlsena, Collins and Kempton 28 



Influence of temperature on the growth of the root of Pisum sativum, Leitch. . 28 



Theinfluence of temperature variations on the respiration of plants, Blanc. . . 28 



The decrease of penneability produced by anesthetics, Osternout 29 



Swelling and germination of seeds, Traube and Marasawa 29 



The influence of oxygenated water on geiinination, Demoussy 29 



Studies on water transfer in plants, Jost 29 



Studies on the decomposition of cellulose in soils, McBeth 30 



The primary sugar of photosynthesis, Dixon and Mason — 30 



The biochemical function of magnesium in plants, Bernardini 30 



The influence of various salts on the gro'n'th of soy beans, Shive 31 



Studies in the nutritive relations of cultivated plants, Hiltner et al 31 



Diastase activity and invertase activity of bacteria, Koch 31 



Quantitative media for the estimation of bacteria in soils. Cook 31 



A method for the renewal of plant nutrients in sand cultiu-es, McCall 31 



Preliminary revision of the genus Inga, Pittier 32 



