n CONTENTS. 



Page. 



About the determination of colloid substances in the soil, Rohland 807 



A contribution to the estimation of colloids in soils, I, Gorski 807 



Soil carbonates. — A new method of determination, Maclntire and Willis 808 



Examination of artificial fertilizers 809 



Application of the microscope to the analysis of fertilizers, Collin 809 



Determination of water-soluble phosphoric acid in superphosphates, Pilz 809 



Soluble silicic acid in Thomas slag powder and its influence, Popp et al 809 



Determination of citric acid-soluble phosphoric acid in slag, Simmermacher 809 



The detection of alum in bread. Van Kregten 809 



Estimation of xanthin basis in cocoa, tea, coffee, Camilla and Pertusi 810 



The Babcock test with special reference to testing cream, Ross and Mclnerney . . 810 



The kinetics of the inversion of sucrose by invertase, Hudson 811 



Inversion of cane sugar with ammonium chlorid, Strohmer and Fallada 811 



Corrected inversion method according to Clerget, Saillard 811 



Decomposition of glutamates on heating in aqueous solution, Stanek 811 



A revision of the hundred point of the saccharimeter. Bates and Jackson 812 



The determination of raflinose in the sugar beet, Nowakowski and Muszynski ... 812 



Examination of commercial starch 813 



Examination and judgment of vegetable tanning substances 813 



Determination of fat in feeds, with reference to trichlorethylene, Neumann 813 



Homemade cider vinegar, Sackett 813 



Pineapi)le vinegar, Kelley 813 



Utilization of waste oranges, Cruess 814 



METEOROLOGY — WATER. 



The weather element in American climates, Ward 814 



The frostless period in Maryland and Delaware, Fassig 814 



Soil moisture and agricultural meteorology, Geze 814 



Is the earth drying up? Gregory 815 



Is South Africa drying up? von Gernet 815 



Secular variation of precipitation in the United States, Henry 815 



The snowfall about the Great Lakes, Brooks 815 



Nitrogen and chlorin in rain and snow, Wiesner 815 



The sterilization of water by ultraviolet rays, Silbermann 816 



Metropolitan sewage farm, Laughton , 816 



SOILS — FERTILIZERS . 



Estimation of the surface of soils, Hanley 816 



Study of physical analysis of fine particles of clay, Muntz and Gaudechon 817 



Soil investigations, Ames and Gaither 817 



The red clay soil of Porto Rico, Gile and Ageton ♦ 818 



Soils, Auchinleck 818 



Studies of meteoric waters, soil, and air, Miintz and Laine 818 



The nitrifying efficiency of certain Colorado soils, Sackett •. . . 818 



Examinationof some more and less productive sections of afield, Lyonetal 819 



The rational improvement of Cumberland^ Plateau soils, Mooers 820 



The rational improvement of Highland Rim soils, Mooers 821 



The applications of electricity to agriculture, Baker 821 



The relation of fertilizers to soil fertility, Guthrie 821 



The use of commercial fertilizers, Barker 821 



Mixed applications of calcium cyanamid and sodium nitrate, Bolin.^ 822 



Using crude phosphates and limes containing silica as manures, Pfeiffer 822 



Ground limestone for soil improvement, Barker 822 



Pennsylvania limestone and lime Bui)plies, Frear .^ 822 



Molasses and chlorinated lime as a soil ameliorant, Harrison and Ward 822 



Trials with molasses as a sugar-cane manure, Ebbels 822 



The fertilizing action of sulphur on grapes, Vermorel 822 



The action of manganese in soils, Skinner, Sullivan, et al 823 



Commercial fertilizers: Inspection 1913, Hite and Kunst 823 



AGRICULTURAL BOTANY. 



The chemical dynamics of living protoplasm, Osterhout 823 



Behavior of inorganic nitrogenous plant food materials in sunlight, Baudisch . . 823 



Effect of manganese and aluminum on plant development, Pfeiffer and Blanck . 824 



