II CONTENTS. [Vol.43 



Page. 



Turbidity standard of water analysis, Wells 613 



Critical study of nietliods for the detection of methyl alcohol, Gettler 614 



Diazometric determination of phenol and certain homolofis, ('iiapin 614 



A quantitative method for determination of vitamin, Williams 614 



Modification of the Van Slyke method for determiniiij; arginiii, Koehler__ 615 



Graphical representation of anlytical results for Hours, Marion 615 



How to know your flours, Teller 615 



The keeping quality of milk, Cooledge and Wyant 615 



Manganese (piautitation in biological material, lleiman and Minot 615 



The determination of sugars by inversion, Hildt 615 



The deterioration of Cuban raw sugars in storage, KopelofE and Perkins— 616 



Sauerkraut production controlled by heat, Le Fevre 616 



Jelly, Campbell 616 



The chemistry of leather, Eglene 617 



The chemistry of wood, Waeser 617 



The proximate composition of Korean hemp and ramie, Uyeda 617 



Three new sources of fuel alcohol 617 



METEOEOLOGY. 



The blue sky and the optical properties of air, Rayleigh 618 



The aeroplane and hail, Stanoi§vitch 618 



California precipitation, Palmer 1 618 



The climate [of South Dakota], Visher 618 



Climate [of Saskatchewan], Kitto 620 



Climates of the British Empire suitable for cotton. Brooks 620 



The weather of the past agricultural year, Brodie 621 



Swedish meteorological observations. 1917 621 



SOILS FERTILIZERS. 



The soil. Hall 621 



A student's book on soils and manures, Russell 621 



Methods for the physical analysis of soil, Koettgen 621 



Mechanical and chemical analyses at La Jaille, Allder 621 



The soils of the Detroit area, McCool and Grantham 622 



The soils of northern Wisconsin, Whitson et al 622 



Survey of soil conditions in Bavaria, Niklas 622 



A comparative study of cropped and virgin soils, Millar 622 



Testing soils for acidity, Truog 622 



Report of the director of soil and fertilizer investigations, Taylor 623 



Reactions and lime requirements of soils of Malmohus. Sweden, Forsberg_ 623 



The development of roots and the lime content of soil. Tacke 623 



Effect of ground water level on rooting" of plants on moor soils. Osvald — 623 



The utilization of the moors of Courland. Dreyer 623 



Brak in its relation to irrigation. Stead 624 



Notes on practical salt land reclamation. Henderson 624 



Soil-sorption, Ramann and Spengel 624 



Solid phases obtained by evaporation of soil extracts, Anderson and Fry- 624 



Distribution in soil of currents emitted by traction lines. Girousse 62r> 



Potential biocliemical activity of the spores of soil bacteria. Neller 625 



Symbiotic nitrogen fixation as influenced by nitrogen in soil, Albrecht 625 



Some of the effects of the war upon fertilizers. Van Slyke 626 



High-grade fertilizers most economical. Patten 626 



Fertilizer work, Taggart 626 



Soil fertility investigations, Thompson 627 



Availability of nitrogenous fertilizers, 1908-1917, Lipman and Blair 627 



Industrial gases, Greenwood 627 



Nitrogen fixation by the Haber method, Jones 627 



Nitrate of lime: Its manufacture and use, Cowie 628 



Cyanamid and its transformation into ammonium sulphate, Nitricus 628 



Fertilizer experiments with deteriorated lime nitrogen, Popp 628 



Pi'evention of volatilization of ammonia nitrogen by CaCU, Stutzer 628 



Solubility of mono- and di-ammonium phosphate, Buchanan and Winner, 628 



Production of PsOb by smelting phosphate rock, Waggaman and Turley— 629 



Making phosphate available with bisulphate, Neumann and Kleylein 629 



