IV CONTENTS. 



AGRICULTURAL BOTANY. 



Page. 



Overhead electrical discharges and plant growth, Priestley 326 



The influence of various colored lights on plants, MasuUi 326 



The closing response in Dionsea, Brown and Sharp 327 



The effect of aqueous solutions of electrolytes on germination, Micheels 327 



Effect of mineral salts on proteid metabolism in plants, Zaleski and Israilsky. . 328 



The relation of plants to certain salts, I, II, Hansteen 328 



The absorption of barium by plants, Colin and De Rufz 328 



Relation of calcium to nitrate nitrogen assimilation by green plants, Ermakov. 329 



The influence of a lack of lime on seedlings of Phaseolus vulgaris, Hoffmann. . . 329 



Recent investigations on the role of hydrocyanic acid in plants. III, Treub. . . 330 



Chlorophyll assimilation of carbon, Kimpflin 330 



[Nitrogen content of nodules and rootlets of immortelle trees], Carmody 330 



The toxic properties of tannin, Cook 330 



FIELD CROPS. 



A manual of practical farming, McLennan 331 



Dry farming experiments, Angus ." 331 



Dry farming practice in Montana, Atkinson and Cooley 331 



Water requirements of crops in India, Leather 331 



Swedish methods of crop improvement, Clark 332 



The rotation experiment in Rosenthal, von Riimker et al 332 



[Variety and other tests of field crops], Zavitz ' 332 



[Experiments with field crops, Barbados, 1908-9], Bovell 334 



[Notes on field crops], Oses, Couret, and Pagliery 334 



Experiment field of the Taganrog Agricultural Society, Bilinski 334 



Results of the Lauchstiidt experiments with small grains, Schneidewind 335 



Irrigation of grain, McLaughlin 335 



Dry-land grains for western North and South Dakota, Salmon 335 



Contributions on the breeding of peas and field beans, Frolich 336 



Correlation between the weight and protein content of barley kernels, Sperling. 336 



The separation of seed barley by the specific gravity method, Derr 336 



A more profitable corn -plan ting method, Hartley 336 



A^ariety work with cotton and notes on selection, DeLoach 336 



Suggestions on cotton cultivation and fertilization, DeLoach and S<)ule 336 



Distribution of cotton seed in 1910, Shoemaker 336 



[Fiber tests], Havik 337 



On the value of the male hop, Salmon and Amos 337 



Sixty-Day and Kherson oats, Warburton 337 



Status of investigations of varieties of sugar beets, Remy and Zimmermann ■ 337 



The significance of number of embryos and size of beet seed-balls, Schubart. . . 337 



Work of the Mackay Central Sugar Experiment Station, McCready 338 



Trifolmm rcsupinatum, Bushuev 338 



Studies in Indian tobaccos, Howard 338 



The P'lorida velvet bean and related plants, Piper and Tracy 338 



Improvement of the wheat crop in California, Blanchard 338 



[Spraying tests and seed investigations], McCready 339 



[Weeds in Ontario in 1908-9], McCready 340 



Corn cockle 340 



A practical method of killing witch grass, Eaton and Edson 340 



HORTICULTURE. 



The role of anesthetics and other agents in plant forcing, Stuart 340 



Smudge pots for the prevention of frosts, Wichita, Kans., Sullivan 341 



[Keeping tests of onions], ('row 341 



The fertilization of apple orchards, Stewart 341 



Orchard fertilization, Stewart 342 



Thinning of table grapes, Bioletti 342 



Fertilizer experiments with grapes, Windisch 342 



Activities of Macomer royal nursery of American grapes, 1897 to 1909, Liiizzi. . 342 



Coffee from grower to consumer, Keable 343 



[Cacao manurial plats in Dominica], Watts 343 



[Varieties of fruit for North Tyrol].'. J^43 



The ornamental trees of gardens and parks, Jager and Beissner 343 



Beautiful fiowers and how to grow them, Wright 343 



The home garden, Hitchings et al ' 343 



