II CONTENTS. [Vol. 41 



Page. 



Tlie loss of moisture from susar samples, Browne and Hardin 208 



Color of susar cane products and decolorization, Zoiiian and Freeland 208 



Pumpkin seeds as a source of oil, Albrecht 209 



Soy bean products and their uses, Williams 209 



Modification of composition of vegetable oils, White 209 



Temperature-time relations in canned foods, Thompson 209 



Action of alcoholic KoH on resins, Nicolardot and Coffignier 210 



The alkali industry, Partington 210 



METEOROLOGY. 



A soil temperature survey of the United States and Canada, Shreve 210 



Report of the department of meteorology, Church, jr 211 



Climate and meteorology [Of Canada], Stupart et al 211 



Climate of Sao Paulo, P>elfort Mattos 211 



The lunar tide in the atmosphere, Chapman 211 



The lunar tide in the earth's atmosphere. Chapman 211 



Atmospheric pollution, Redway 211 



SOILS FEETILIZEES. 



Reconnoissance survey of San Joaquin Valley, Cal., Holmes et al 211 



Soil survey of the Santa Maria an>a, Cal., Watson and Smith 211 



Soil survey of Saratoga County, N. Y., Maxon and Bromley 212 



Land classification in south half of Minnesota, Leverett and Sardeson 212 



Peat and nmck soils, Ames 212 



Nitrification in moor soils, Arnd ^ 212 



Nitrogen contents of cacao soils with and without shade, de Verteuil 213 



The organic phosphorus of soil, Potter and Snyder 213 



The movement of plant food Avithin the soil. Van Alstine 214 



Aluminum and acid soil on barley and rye, Hartwell and Pember 214 



Influence of heated soils on seed germination and growth, Johnson 215 



The Actinomyces of the soil, Waksman and Curtis 217 



The occurrence of Actinomyces in the soil, Waksman and Curtis 217 



Illinois crop yields from soil experiment fields, Hopkins et al 218 



Commercial fertilizers for Indiana : What to use, AViancko 218 



The agricultural value of organic manures, Russell 218 



How the nitrogen problem has been solved, Creighton 218 



Production of ammonia from lime nitrogen and the yield, Grahmaun 219 



America's advance in potash production, Ebaugh 219 



Trade and fraud in connnercial fertilizers, Pompeu do Amaral 219 



Report of analyses of commercial fertilizers collected during 1918 219 



AGBICULTURAL BOTANY. 



The flora of the American Virgin Islands, Britton 219 



Geobotany of the Santa Lucia Mountains, Shreve 220 



The vegetation of an imperfectly drained desert valley, Shreve 220 



Isolation and specific change, Sinnott 220 



Osmotic concentration in relation to geographical distribution, Harris 220 



Osmotic concentration of tissue fluids of epiphytes, Harris 220 



Endurance of extreme conditions and relation to adaptation, Osterhout 220 



Investigation on the imbibition of water by gelatin, Shreve 221 



Effect of organic acids and amido compounds. MacDougal and Spoehr 221 



The absorption of calcium salts by squash seedlings. True and Harvey 221 



The nucleus as a center of oxidation, Osterhout 221 



Studies on the production of matter in light and shadow plants, Jensen 222 



The luminescence of Pseudoinonas lumincscens, de Coulon 222 



Transpiration |in plants], Ivnight 222 



Weather conditions and plant development. Burns 222 



Contact stimulation. Stone 222 



Apparatus for determining the temperature of leaves, Shreve 222 



Evolution by hybridization, Jeffrey : 223 



Inheritance studies on castor beans, White 223 



The inheritance of doubleness in Chelidonium majm, Sax 223 



Duplication and cohesion in the main axis in Cichorium intyWs, Stout , 223 



