n CONTENTS. [Vol.43 



Page. 



A method for the determination of cystin, Olcuda 505 



Observations on color changes of the diplienylamin reaction, Harvey ~)05 



Determination of lactose in altered milk, Hildt 505 



Butyl alcohol for determination of saponitication numl)ers, Piirdee et al 505 



A method for the determination of taurin in muscles, Okuda and Sanada_ 506 



The distribution of certain chemical constants of wood, Dore 506 



The proximate analysis of coniferous woods, Dore 506 



True tanning value of vegetable tanning materials, Wilson and Kern 506 



The iodometric estimation of sugars, Judd 507 



The deterioration of sugar by molds, Kopeloff 507 



Some temperature experiments in clarification, Walker 507 



Molasses as an index of inversion in manufacture, Scard 507 



Formation and exhaustibility of molasses, A''an der Linden 508 



Grain in molasses, Kalshoven 508 



Correction, Kalshoven 508 



Grain in molasses, II, Kalshoven 508 



Sugar grain in final molasses, Harloff 509 



The water content of true final cane molasses, Geerllgs 509 



METEOROLOGY. 



Modifying factors in effective temperature, Hopkins 509 



Influence of snow on the development of vegetation in spring, Jacques 509 



Agricultural significance of sunshine as illustrated in California, Palmer_ 509 



Carbon dioxid and plants, II, Reinau 510 



Monthly Weather Review 510 



Climatological data for the United States by sections 511 



Meteorological observations at Massachusetts Station, Ostrander et al 511 



Meteorology, Frear, Edmiston, and Kern 511 



SOILS FERTILIZERS. 



Soil survey of Shelby County, Ala., Stroud, Smith, and Agee 511 



Soil survey of the Ventura area, Calif., Nelson et al 512 



Soil survey of Yamhill County, Oreg., Kocher et al 512 



Soil survey of Lubbock County, Tex., Veatch and Lewis 512 



Soil survey of Accomac and Northampton Counties, Va., Stevens 513 



Importance of geology for study of agricultural and forest soils, Niklas — 513 



Agronomic study of the soils of Morocco, M, and L. Rigotard 513 



Soil reaction, plant diseases, and development of certain plants, Stutzer — 513 



Influence of soil and fertilization on diseases of plants, Ehrenberg 513 



Restoration of soils near zinc roasters, Ullrich and Trewartha 513 



Effect of nitrogen-fixing organisms on plant growth, Bottomley 514 



The influence of nitrates on the growth of Azotobacter, Hills 514 



Velocity of nitrification in soils, Given and Kuhlmann 515 



The coagulation of clay and the protective action of humus acids, Oden__ 515 



The freezing-point lowering of soils and plants, McCool and Millar 515 



Hydrogen-ion concentration of soils and " lime requirements," Joffe 515 



Relative absorption by soil of sodium carbonate and chlorid, Kearney 516 



Injurious effects of potash and sodium salts on soil structure, Nolte 516 



Effect of calcium sulphate on the solubility of soils, McCool and Millar__ 516 



Sulphur in relation to soil fertility, Stewart 517 



Effect of manure-sulphur composts on greensand, McCall and Smith 517 



Farmyard manure: Its making and tise, Russell 518 



Plant analyses and the fertilizer requirements of soil, ;\Iiinter 518 



Phosphoric acid in oats and relation to fertilization, Mitscherlich 518 



Field tests on action of fertilizers on soil aldehydes, Skinner and Noll 519 



Separation of dust from lime nitrogen, Caro 519 



Improvement of lime nitrogen, Baumann 519 



Lime nitrogen as a top-dressing, Kuhn 519 



National aspects of increasing the supplies of basic slag, Middleton 519 



Separation of feldspar for production of potash, Neumann and Draisbach_ 519 



The use of lime on the soil, Fippin 519 



Limestone resources of Pennsylvania, Holben and Frear 520 



Lime report, 1919, Kellogg 520 



