n CONTENTS. 



Page. 



The alcohol test in relation to milk, Ayers and Johnson, Jr 113 



The value of the rosolic acid-alcohol test, Bahr 115 



Kellner's modification of Petermann's method, Loges 115 



A study in drying urine for chemical analysis, Braman 116 



Quantitative estimation of mea and allantoin in urine, Plimmer and Skelton. . 116 



A permanent preparation of lu-ease and its use, Van Slyke and Cullen 116 



METEOROLOGY. 



Relation of climate to plant growth in Maryland, McLean 116 



A correlation of weather conditions and production of cotton in Texas, Kincer. . 117 



Temperature and spring wheat in the Dakotas, Blair 117 



The distribution of the rainfall in the eastern United States, YvMlis 117 



Monthly Weather Review 117 



Meteorological observations at Massachusetts Station, Ostrander and McLain. . 118 



Instructions for cooperative observers 118 



SOILS — FERTILIZERS. 



Colloid chemistry in the study of soils, Gedroits 118 



The destructive distillation of soil, Holmyard 120 



Electrolytic determination of the biological solution of soil,_ Pantanelli 120 



Contribution to bacteriological studies of the soil, Wojtkiewicz 120 



Isolation of Bacillus radicicola from soil, Lipman and Fowler 121 



Origin of the "niter spots" in certain western soils, Stewart and Peterson 121 



The soils of the western New York fruit and grain region, Fippin 121 



The sandy soil of Sylvan Beach, New York, Knight 121 



Salts in soils and waters of the south coast of Porto Rico, Crawley 121 



Application of fertilizers to soil, and losses by leaching, Crawley and Cady 122 



Effect of fertilizers on physical properties of Hawaiian soils, McGeorge 122 



Influence of radio-active earth on plant growth and crop production, Rusby. . 123 



Radio-active ores and plant life, Bastin 123 



The significance of certain food substances for plant growth, Bottomley 124 



The question of fertilizers, Rebello da Silva 124 



Utilization of the sewage of New York City, Soper et al 124 



The mechanism of nitrification, Mumford 124 



Synthesis of the oxids of nitrogen by the electric arc. Reseller 125 



When should lime nitrogen be applied to winter grains? Wagner 125 



Nitrogenous fertilizers from refuse substances, Elschner 125 



Availability of the nitrogen in Pacific coast kelps, Stewart 125 



The bone, animal waste, phosphate, and phosphorus industries, Vezien 126 



Analyses of commercial fertilizers, Peck, Sample, and Garrison 126 



Commercial fertilizers, Hite and Kunst 126 



AGRICULTURAL BOTANY. 



On certain relations between the plant and its physical environment, Farmer. . 126 



The plant in relation to its biological environment, Farmer 126 



Town smoke and plant growth, Crowther and Ruston 126 



Damage to vegetation by sulphurous and sulphuric acids, Tatlock and Thomson . 127 



Hail injury to cereals, Schander 127 



Transpiration and the ascent of sap in plants, Dixon 127 



Extreme alterations of permeabiUty without injury, Osterhout 127 



The problem of food movement in trees, Elliott 127 



Influence of chlorida and nitrates on germination, Micheels 128 



A method of prophesying the life duration of seeds, Crocker and Groves 128 



Light and the rate of gro\\i;h in plants, MacDougal 128 



Relation between brief illumination and reaction in vetches. Campanile 129 



The identity of heliotropism in animals and plants, Loeb and Wasteneys 129 



The coefficient of mutation in Oenothera biennis, DeVries 129 



An interpretation of self -sterility. East 129 



Number of ovules formed and seeds developing in Cercis, Harris 130 



Taxonomic value of i>ore characters in grass and sedge rusts, Arthur and Fromme. 130 



The development of Armillaria rnellea, Atkinson 130 



