II CONTENTS. [Vol. 41 



Page. 



A method for the volumetric estimation of sulphates, Rivett 411 



Phosphoric oxid in fertilizers, soil extracts, etc., Marchand 411 



Total nitrogen in soils with large amounts of nitrates, Snyder 411 



Aids to the analysis of food and drugs. Moor and Partridge 412 



Determination of caffein in vegetable material, Power and Chesnut 412 



Estimation of butter, coconut, and palm kernel fat, Blichfeldt 412 



The iodin value (Wijs) of palm kernel oil, Ellis and Hall 412 



The cuprous chlorid-iodin method fin- reducing sugars simplified, Scales__ 412 



Inorganic constituents of blood and other material, Greenwald 413 



Determination of ammonia in the blood, Morgulis and .Tahr 413 



Lewis-Benedict method of blood sugar determination, I\Iorgulis and Jahr_ 413 



Determination of lead in urine, feces, and tissues, Denis and Minot 413 



Coloriraetric method for ui'ic acid in urine, Folin and Wu 414 



A simplified macro-Kjeldahl method for urine, Folin and Wright 414 



Vinegar making from apples, Anderson 414 



Process for production of acetone and ethyl alcohol, Northrop et al 414 



Biochemistry of Bacillus acetoethijUcum, Northrop et al 415 



Acetone and butyl alcohol by bacteriological process, Speakman 415 



Bacteriology and technology of preserving meat, Kossowicz and Nassau 415 



Vegetable decolorizing carbons for the cane sugar industry, Zerban et al 415 



The deterioration of cane sugar by fungi, N. and L. Kopeloff 416 



An improvement in casein making, Sammis 417 



Agricultural industries, Wilbrands, edited by Slats 417 



METEOEOLOGY. 



The larger relations of climate and crops in the United States, Ward 417 



Report of the chief of the Weather Bureau, 1918 417 



Monthly Weather Review 417 



Climatological data for the United States by sections 418 



The rainfall of France, Mathias 419 



£OILS — FERTILIZERS. 



Soils and soil cultivation, Gardner 419 



Soil survey of Caldwell County, N. C, Cobb and Davidson 419 



Pleistocene and recent deposits in the vicinity of Ottawa, Johnston 419 



Pyrolusite from Virginia,. Watson and W^herry 420 



Rate of formation of soluble material in cropped and virgin soils, Miliar- 420 



Changes in soil and water extract following manure, Hibbard 420 



Parallel formation of carbon dioxid. ammonia, and nitrate in soil, Gainey_ 421 



Capillary moisture-holding capacity, Gardner 422 



Penetration of periodic temperature waves into the soil, Aichi 422 



Effect of certain colloidal substances on wheat seedlings, Jennings 422 



Effect of soil and fertilizer on nitrogen and ash of crop. Maschhaupt 422 



The abnormality of soils in field-placed cylinder experiments, Mooers 423 



Mining and manufacture of fertilizers and relation to soils, Lloyd 423 



Farm manure, Nagant 424 



The world's supply of nitrogenous fertilizers, Ander.son 424 



War-time production of nitrogen compounds in Germany, Bueb 424 



Comparative experiments with nitrogenous fertilizers, Schneidewind 424 



Comparative test of several nitrogenous fertilizers, Bachelier 424 



Field experiments with nitrate of ammonia, Hendrick 424 



Setting of superphosphate and ammonium sulphate, Fowweather 425 



Phosphate demonstration in Stevens County in 1918, McMiller et al 425 



The phosphate industry, Hendrick 425 



American potash. Roe 426 



The Alsatian potash industry, Cameron 426 



Value of sodium when potassium is insufficient, Hartwell and Damon 426 



Relation of sulphates to plant growth and composition. Miller 427 



Available fertilizer from smelter by-products, O'Gara 427 



Lime requirements determined by plant and chemist, Hartwell et al 428 



An artificial fertilizer, Gautier and Clausmann 428 



Fertilizers in Cochin China, Bussy 428 



