n CONTENTS. 



Page. 



The differentiation of animal from plant fats, Biermann 13 



Estimation of saccharose in frozen and thawed beets, Saillard 13 



The comparative study of different methods of inversion, Gillet 13 



Reduction of copper oxid in alcohol vapor, Wedderburn 13 



Ether-soluble matter in the nitrogen-free extract of feedstuffs. Rather 13 



The determination of lint in cotton-seed meal, Brackett 13 



METEOROLOGY. 



Text-book of meteorology, von Hann and Suring? 13 



The practical utiUty of a -world bureau of meteorology, Hays and Clayton 14 



Climatic subdivisions of the United States, Ward 14 



Seasonal limits, Brodie. 14 



Occurrence of lunar periods in solar activity and the climate, Pettersson 14 



Distribution and variations in the mean air pressure over Europe, Freybe. ... 14 



Report on meteorological obser^'ations at Wisley, 1914, Curtis 14 



Composition of rainfall at Montevideo, 1909-1012, Schroeder 15 



The soot- and dust-fall of English towns and cities, Kershaw 15 



SOILS — FERTILIZERS. 



Pike County soils, Hopkins, Mosier, Van Alstine, and Garrett 15 



Soil analyses 15 



Past and present soil investigations in Norway, Bjorlykke 16 



White soils, Vogcl von Falckenstein and von Romberg 16 



Influence of irrigation and humidity on soil formation, Dimo 16 



The moisture conditions of a loam soil under different crops. Von Seelhorst 17 



Influence of soil composition on medicinal plants, Miller 18 



The adsorptive power of soils, II, Rohland 18 



Soil colloids anci their adsorptive power, Rohland 18 



Injurious transformation of nitrogen in moor soils as result of lime, Arnd 18 



Action of certain humus preparations on plant growth, Ilaselhoff 10 



Sulfofication in soils, Brown and Kellogg 19 



Sulfofication in soils, Brown and Kellogg 20 



Field tests with salicylic aldehyde, Schreiner and Skinner 20 



Soil protozoa, Koch 20 



[Address of the president of the section on agriculture]. Hall 22 



The fertilizer requirements of soil, Miiller 22 



Fertilizer tests on different crops, Dusserre 22 



How not to treat Illinois soils, Hopkins 22 



Unexhausted manurial values: A criticism with some suggestions, Hendrick. . 22 



The composition and value of liquid manure, Hendrick 23 



Composition of liquid manure, Dusserre 24 



Relative value oi the most important nitrogen fertilizers, Oswald et al 24 



The better method of using ammonium sulphate, Malpeaux ._ 24 



Fertilizer experiments ^vith transformation products of Ume nitrogen, Kappen . . 25 



[Experiments with superphosphates], Perkins and Spaff ord 25 



Phoephatic manures, Perkins 26 



Mixing ground limestone with acid phosphate, Brackett and Freeman 26 



Potash in the Texas Permian, Udden 26 



Seaweed as a source of potash for agriculture, Moffatt - 26 



Experiments with potash waste liquor lime, Haselhoff and Schmidt 26 



Potash and lime in agriculture and the arts, Coggeshall 27 



Influence of potassium f errocyanid on plant growth, Haselhoff 27 



Sulphur and pennanent soil fertility in Iowa, Brown and Kellogg 27 



Composition of certain fish fertilizers from the Pacific coast, Lindemuth 28 



Commercial fertilizer "1915 yearbook" 28 



The American fertilizer handbook 29 



AORICtJLTURAL BOTANY. 



Studies on periodicity in plant growth, I, Robertson and Crosse 29 



Studies on periodicity in plant growth, II, Crosse 29 



Automatic method for investigation of transmif^sion of excitation, Boee 29 



Infltience of elertric currents on transmission of excitation, Bose 29 



Variations in respiratory artivitv in relation to sunlight, Spochr .10 



On the function of chloVophvU. "Ewart "'0 



Studies on phveico-chcmicaJ properties of vegetable sape, III, Harris et al 30 



