CONTENTS. m 



Page. 



Contractions resembling plasnaolysis caused by pure distilled water, Osterhout. . 130 



Toxic inorganic salts and acids as affecting plant growth, Lipman and Wilson. . 130 



Arsenic compounds in agriculture and possible danger, Ampola and Tommasi . . 130 



Anatomical and physiological influence of tobacco smoke on seedlings, Purkyt. . 131 



Injuries to vegetation by furnace gases and ashes, Miiller et al \... 131 



Effects of illuminating gas on vegetation, Stone 131 



Influence of radio-active body on germination, Crochetelle 131 



Semipermeability of seed coats, ShuU 132 



Influence of partial suppression of the reserve material in seeds, Delassus 132 



The function of grape leaves in relation to the clusters, Marescalchi J 32 



Some points on the floral development of red clover, Martin 132 



Demonstrations of ectotrophic and endotrophic mycon-hiza, McDougall 132 



Contributions on the colorless sulphur bacteria, Hmze 133 



Culture of micro-organisms, Kiister 133 



FIELD CROPS. 



Causes of the increased yields during the last three decades, Lehn 133 



Making money on farm crops, Nichols 133 



[Experiments with field crops] 133 



Field experiments 133 



[Field crop experiments], Foulkes 134 



Manurial experiments, Balfour and Rush ton 134 



Report of the Hedemarken Experiment Station, 1912, Christie 134 



Report of Ribe County Western Agricultural Society, 1912, Esbjerg 134 



Report of the plant culture stations, 1912-13, Larsen et al 134 



Plant breeding at Tystofte, Lindhard 134 



A method for variety tests, Bilger 134 



The influence of vegetative factors on yield, Mitscherlich and Floess 135 



Cereal investigations at the Nephi [Utah] substation, Cardon 135 



Prevention of lodging of cereals, Ziehe 136 



Influence of moisture, fertilizer, and soil on barley and wheat, Polle 136 



Composition of timothy and wheat plants during growth and ripening, Haigh. . 137 



[Fibers from Papua (British New Guinea) and India] 138 



The use of sulphur in the cultivation of turnips and beets, Magnien 138 



Bean growing in eastern Washington and Oregon, and northern Idaho, Fluharty 138 



Field trials on the manming of carrots, Stokes '. 1 38 



Clovers, Calvino 138 



Crimson clover, Grantham 138 



Effect of fi'ost on corn, Lindsey 138 



Seed selection of Eg\Tptian cotton, Kearney 138 



Propagating cotton plants by slips, Gastet ._ 139 



Cowpeas for soil improvement, Grantham 139 



Value of meadow foxtail gro"«Ti on peat soils, von Feilitzen et al 139 



A variety test of jDotatoes, Gaskill 139 



[Field crop experiments], Malthouse 130 



Sulphur for prevention of scab and as indirect fertilizer, von Feilitzen 139 



Lessons for American potato growers from German experiences, Orton 139 



Beet sugar in New England, Lindsey 140 



Sugar-cane experiments, Harrison and Ward 1 40 



Classification of the forms of Ilelianthus annuus, Sazyperow 140 



Research work at Harrow Experimental Station, 1911, Bamet 140 



Tobacco culture, Blackshaw 140 



Cultivation of tobacco for the preparation of fruit and hop washes i 40 



A cross between Triticum vulgare and T. monococcum, Wawiloff 1 40 



\\Tieat growing in Wisconsin, Delwiche and Leith 141 



Some variable results of seed testing. Stone 141 



Seed work for the year 1912, Stone 14 1 



"Yellow rattle," as a weed on arable land, Brenchley 141 



HORTICULTURE. 



Intensive fanning, Corbett 141 



Recent progress in Belgian horticulture, Vemieuwe 141 



Malnutrition or ovei-fertilization of greenhouse crops, Haskins 141 



Influence of light, soil moisture, and hydrocyanic-acid gas on cucumbers, Stone. 142 



Effects of fertilizers on growth and composition of asparagus roots, Morse 142 



