n CONTENTS. [Vol. 38 



Page. 



Analytical control of the ammonia oxidation process, Taylor and Davis 311 



Method for determination of ammonia nitrogen with formaldehyde, van Bers.. 311 



Determination of potassium and sodium in ash of vegetable substances. Pellet. . 311 



Recovery of perchloric acid from residues in potash determination, Viiirthem. 312 



Determination of lime as calcium sulphate, Willis and Maclntire 312 



Determination of fluorin with application to phosphates, Wagner and Ross 313 



The mechanical analysis of soil, Pratolongo 313 



Modified method for determining carbonates in soil, Tempany and Kelsick. . . 313 



Examination of water. Mason 313 



Volumetric method for determination of formic acid or formates, Tsiropinas. . . 313 



The determination of salicylic acid in foods, Steenbergen 314 



New procedure for determining the fineness of wheat flour, Perracini 314 



Some new methods for determining the fineness of flour, Lo Priore 314 



The conservation of tomatoes, Guamieri 314 



Note on determination of nonfatty soUds in milk, Tempany 314 



Estimation of fat in condensed milk and powders, Biesterfeld and Evenson. . . 314 



Outline for the analysis of sugar products, Lajoux and Ronnet 315 



A method for the determination of alcohol, Iiaines and Marden 315 



Detection of methyl alcohol in alcoholic beverages, Takahashi et al 316 



Colorimetric method for cresol or phenol preservative in senims, Elvove 316 



Commercial evaporation and drying of fruits, Beattie and Gould 316 



Homemade fruit butters. Close 317 



The viscous fermentation of beet juice, Delaval 317 



Contribution to the study of alcoholic fermentation, Keyser 317 



Tests on oil treatment of wood against marine borers, Teesdale and Shackell. . . 317 



METEOROLOGY. 



A.gricultural meterology. Smith 317 



The economic aspect of cUmatology, Wells 317 



Forecasts of weather favorable to an increase of forest fires, Beals 317 



The meteorological influences of lakes, Miller 317 



Climatological data for the United States by sections 318 



Meteorological records, Burke 318 



Report of the consulting meteorologist, Voorhees 318 



Report of the consulting meteorologist, Voorhees 318 



Report of the consulting meteorologist, Voorhees 319 



The weather and climate of Salt Lake City, Utah, Thiessen 319 



The climate of Cuba, Gutierrez-Lanza 319 



SOILS FERTILIZERS. 



Soil moisture studies under dry farming, Harris and Jones 319 



Soil moisture studies under irrigation, Harris and Bracken 320 



The rate of water movement in aerated soils, PulUng 321 



The shrinkage of soils, Tempany 321 



The proof of microbial agency in the chemical transformation of soil, Conn 322 



[Soil bacteriology], Hutchinson 322 



The influence of arsenic on the bacterial activities of a soil. Greaves 322 



The effects of alkali salts on nitrification. Brown and Hitchcock 322 



Reclaiming niter soil in the Grand Valley, Sandsten 323 



Soil survey of Harnett County, N. C, Jumey and Perkins 323 



Reconnoissance soil survey of part of north-central Wisconsin, Geib et al 324 



The composition of the soils of south-central Texas, Fraps 324 



"Black alkaU " in the San Luis Valley, Headden 324 



g 'regress report of soil and fertiUzer work in Rhode Island], Hartwell 325 



ood from the air, Leffmann 325 



The fixation of nitrogen in feces, Richards 325 



The availability of phosphoric acid in rock phosphate, Fraps 325 



Acid phosphate v . raw phosphate rock, Thome 326 



Reactions of phosphorus of thickened root of flat turnip, Hartwell et al 326 



Potash in 1916, Gale 326 



Effects of lime and magnesia on conservation of soil sulphur, Maclntire et al. . 327 



Accessory factors for plant growth, Rosenheim 328 



Analysis of fertilizers for 1917, Curry and Smith 328 



Commercial fertilizers in 1916-17, Fraps 328 



