CONTENTS. in 



Page. 



Commercial fertilizers, Hite and Kunst 327 



Fertilizing materials, Shutt 327 



An act to regulate the sale of commercial fertilizers 327 



The American fertihzer handbook, 1912 327 



The world's consumption of fertiUzers 328 



Mineral fertiUzers in Spain 328 



Artificial fertihzer trade 328 



AGRICULTURAL BOTANY. 



A text-book of botany. — II, Ecology, Coulter, Barnes, and Cowles 328 



Types of British vegetation, edited by Tansley 328 



The practice of agricultural bacteriology, Lohnis 329 



One thousand fungi, Mcllvaine and Macadam, revised by Millspaugh 329 



Seeds and plants imported from April 1 to June 30, 1911: Inventory No. 27. . . 329 



Deciduous rootlets of desert plants. Cannon 329 



Setting of fruit and seed by cultivated plants, Zacharias 329 



Low temperatures with exclusion of air and viability of seeds, Clemens 329 



Results of the germination of seed subjected to various solutions, Lesage 330 



The effects of caffein upon the germination and growth of seeds. Ransom 330 



Water and light as factors in vegetation, Pfeiffer, Blanck, and Fliigel 330 



Relation of daily transpiration to the water content, Livingston and Brown 331 



Stimulation movements of plants, Pringsheim 331 



Nitrogen assimilation under sterile conditions, Petrov 331 



The assimilation of nitrates in plant cells, Loew 332 



The physiological function of magnesia in green plants, Bemardini and Morelli. 332 



Injurious effects of illuminating gas upon greenhouse plants, Wilcox 332 



The tarring of roads and its effect on the neighboring vegetation, Gatin 333 



Chemical protection of plants against freezing, I, Maksimov 333 



A new method of cultivating some higher plants in sterile media. Combes 333 



FIELD CROPS. 



[Field crops work at the Canadian stations and farms in 1910], Saunders et aL. 334 



[Field crops at the Florida Station], Scott 335 



Report on the agiicultural stations in Central Provinces and Berar, 1910-11 336 



i Fertihzer and variety tests], Thompstone 337 



Crops and green fodder in winter], Marks 337 



Cooperative experiments of the department of agronomy, Miller and Hutchison . 337 



Emergency crops for overflowed lands in the Mississippi Valley, Knapp 337 



Top dressing grass lands. — The sowing of red clover, Grantham 337 



Separation of Swiss cereals into different types. Martinet 338 



[Small grain varieties recommended] 338 



Alfalfa seed production, Westgate, McKee, and Evans 338 



[Alfalfa seed in color, gennination, and structure], Mackinnon 338 



Second generation of the cross between velvet and Lyon beans. Belling 338 



Com production, Roberts and Kinney 339 



Cotton and cotton culture, Churchill and Wright 340 



Experiments with varieties of cotton, Harper and Tarbox, jr 340 



The seeding of cowpeas, Miller 340 



Thousand-headed kale and marrow cabbage, Chapin 340 



Changes in the oat plant as it approaches maturity, Keitt and Tarbox, jr 340 



The assimilation of phosphorites by oats and buckwheat, Sazanow 340 



A new basis for estimating the value of potatoes, Zolla 341 



Rye selection at Svalof , 1910, Ljung 341 



The quahty of grain in the season 1910-11, Schaffnit 341 



The sugar beet in 1911, Saillard... 341 



Biometrical studies of tobacco varieties, Rinaldi 341 



Early fertilization of tobacco seedlings and later development, Montemartini.. 341 



Field experiments with wheat, Ditzell 342 



The effect of carbon bisulphid on the germination of wheat, Morettini 342 



Plant breeding methods, Hummel 342 



[Seed tests], Hammar 342 



Studies with dodder. ^ — I, Germinability; II, Infection studies, von Degen 342 



Michigan weeds, Beal ,,... 343 



