

CONTENTS. Ill 



Page. 



Cooperative fertilizer and field trials with farm crops, 1910, Bolin. 424 



Fertilizer experiments to determine the requirements of meadow soils, Grete. . 424 



Experiments with farm manures made with different kinds of litter, Rhodin. . 424 



The action and value of stable manure, Schulze et al 424 



The denitrifying action of straw maniure, Doiarenko 424 



Green manure farming, Hoffmann 425 



Manganese chlorid in the treatment of night soil, Chaptal 425 



The fixation of atmospheric nitrogen, Brochet 425 



The use of cyanamid as fertilizer, Malpeaux 425 



Calcium cyanamid in the soil and its treatment in the factory, Carlson 425 



The hygroscopicity of Norwegian nitrate, Hals 425 



[Production and consump* Ion of Chilean nitrate], Fisher 425 



Experiments with different potash minerals, Prianishnikov and Doiarenko 425 



Investigations on the Plantegaarde salt deposits, 1909, Hissink and Van Kampen 426 



Power of potash salts to convert aluminum silicates into soluble forms, Stol'gane . 426 



The utilization of various phosphates, Mooers 426 



Sand cultures with different phosphates, Shulov 427 



Effect of Palmaer phosphates, Thomas slag, and superphosphate, von Feilitzen. 428 



Influence of rice bran on manurial value of phosphoric acid in oil cakes, Kida. . 428 



Some bacteriological effects of liming. Brown 428 



The use of street sweepings from Montevideo as a fertilizer, Schroder 429 



Fertilizers, 1911 429 



AGRICULTURAL BOTANY. 



Periodicity in plant growth as related to climatic variations, Vanderlinden 429 



Influence of light on the transpiration of succulent plants, Leclerc du Sablon. . 430 



On the influence of ultraviolet rays on vegetation, Stoklasa et al 430 



Effect of luminous radiations on zoospores of Chlamydomonas, Desroche 431 



Effect of absolute darkness on the growth of plants in laboratories, Friedel .... 431 



The occurrence of hemagglutinin in plants, von Eisler and von Portheim 431 



Iron and the formation of conidia of Aspergillus niger, Javillier and Sauton 431 



Influence of calcium on Aspergillv^ niger, Robert 431 



Presence of barium in the ash and extract of Kansas weeds, Bailey and Sayre. 432 



Effect of tarruig roads on the growth of trees in the Bois de Boulogne, Gatin. . . 432 



Experimental reproduction of the injury to plants from tarred roads, Gatin 432 



Anatomical modifications on plants from tarred roads, Gatin and Fluteaux 432 



Floral anomalies in Japanese hops and hemp due to early seeding, Tournois. . . 432 



On the variations in tuberous Solanums, Berthault 433 



Inheritance of "doubleness " and other characters in stocks, Saunders 433 



An attempted analysis of parasitism, MacDougal 433 



Induced and occasional parasitism, MacDougal 433 



FIELD CROPS. 



Proceedings of the American Society of Agronomy 434 



The relation between the size of seeds and the yield of farm crops, Zavitz 434 



Experiments with rice and secondary crops, Vander Stok 435 



Report of the Aligarh Agricultural Station for 1911, Parr 436 



Variety selection of hoed crops and leguminous plants, von Riimker 436 



The dry matter content in root crops and its determination, Bolin 436 



Manurial and variety tests with roots, Baylis 436 



On seed production with forage plants and some related questions, Elofson 436 



An experiment on the renovation of poor pasture land, Milburn and Gaut 436 



Varieties of corn in Ohio, Abbott 437 



J. S. Leaming and his com, Lloyd 437 



Maize experiments at the experimental farm, Potchefstroom, Bell 437 



A new breed of maize: The "Mercer," Burtt-Davy 437 



Cotton : From the raw material to the finished product, Peake 437 



Weight, specific gravity, and dry matter of mangels, Kristensen 437 



Potato improvement work at Svalof , Lundberg 437 



Marsh potato {Solcmum commersonii) , Hansen 437 



The improvement of local rice 438 



Wild rice in tropical Africa, Chevalier 438 



The soy bean of Manchuria, Shaw 438 



The soy bean in India, Hooper 438 



Influence of salt and green manuring on sugar beet, de Ruijter de Wildt et al. . 438 



