II CONTEISTTS. [Vol. 43 



Page. 



Some observations on colorimetric estimations, Falk and Noyes 414 



Rapid method for carbon in organic mixtures, Lescoeur and Dutrieus 414 



Itapid (leterminiitioii of carbon, Lescoeur 414 



Fat determination in dehydrated potatoes, Matzdorff and Kiilme 414 



Examination of frozen egg products, Redlield 414 



The determination of added water in meat products, Ledent 415 



The composition, action, and analysis of chemical yeasts, Kling et al 415 



Chemical j-easts (baking powder), Weil 415 



The analysis of milk, Porcher 415 



Methods for determining fat content of skim milk, Mclnerney and Troy — 415 



Microchemical method for sugnr in body fluids, Goiffon and Nepveux 416 



Rapid methods f<n- determination of protein and sugar in urine, Lenk 416 



Note on the methods of determining urea in the blood, Slosse 416 



Application of hydrogen in hydrogenation or hardening of oils, Barnitz__ 416 



Acidity and inversion: Observations on relation between them, Pitcairn 416 



The seeding method of graining sugar, Zitkowski 416 



The manufacture of alcohol from sulphite waste liquor, McKee 416 



METEOKOLOGY. 



Periodicity in weather and crops 416 



Lunar and rainfall peiiods, Mesnard 417 



[Influence of altitude and topography on temperature], Young 417 



The effect of snow upon the growth of winter wheat, Meisinger 417 



The economic v:ilue of Antarctic meteorology to agriculturists 418 



General classification of climates. Koppen 418 



Climatic conditions [of the Huntley Farm, 1918], Hansen 418 



Weather conditions [on Kewlauds Reclamation Project, 1918], Headley 418 



Minimum temperatures of 1918 in Paraguay, Bertoni 418 



SOILS FEETILIZEES. 



The data of geochemistry, Clarke 419 



Soil survey of Cass County, Ind., Beats 419 



Analyses of one hundred soils in Allen County, Ind., Carr and Phares 419 



Report on Coastal Plain soils, Williams et al 419 



Agricultural value and reclamation of Minnesota peat soils, Alway 420 



Experiments in the reclamation of alkali soil, Headley 420 



The prevention of soil erosion, I, II, Hoffman and Turner : 420 



Lime requii-ement of soil according to Veitch method, Blair and Prince 421 



Reduction potentials of bacterial cultures and soils, Gillespie 421 



Number of colonies for a satisfactory soil plate, Noyes and Grounds 422 



Length of time to incubate petri plates, Noyes, Voigt, and Luckett 422 



The etching of marble by roots, Fred and Haas 422 



The growth of higher plants in soils free of microorganisms, Fred 422 



Bacteria in frozen soils, Noyes 422 



Soil improvement for maize. — I, Manures and fertilizers, Wenholz 422 



Conservation of manure in the Province of Ostergotland, von Feilitzen — 423 



Engineering and sanitation for manure, de Soroa 423 



Conservation of liquid mamire, Gerlach 423 



Peat litter for conservation of fertilizers, von Feilitzen 423 



Green leaf maniiring of diy paddy land, Parnell 423 



Effect of fertilizers on hydrogen-ion concentration of soils, Morse 423 



Commercial fertilizer, Harney 424 



A bacterial fertilizer from a superphosphate factory, Geilmann . 424 



Special [fertilizer] tests, Williams 424 



Fertilizer and crop tests in .lava and east coast of Sumatra, van Rossem — 425 



Effect upon profit of quantity of fertilizer used on cotton, Williams 425 



Consumption of inorg-anic nitrogen in the United States, Gaillard 425 



Supply of inorganic nitrogen in the United States, Gaillard 426 



The German nitrogen syndicate, Caro 426 



Atmospheric nitrogen for fertilizers, Davis 426 



Calcium cyanamid and dieyandiamid as vegetation factors, Linter 426 



Ammonium nitrate, Malpeaux 427 



Relative efficiency of different nitrogenous materials. Williams 427 



Effect of leaching on availability of rock phosphate to corn, Bauer— „ — „ . 427 



