CONTENTS. m 



Page. 



The availability of the potash in "rapakivi" and pegmatite granites, Aechan. . 127 



Factors inlluencing the availability of rock phosphate, Truog 127 



Report of the Lyon nitrate prospect near Queen, N. Mex., Free 127 



The present status of the artificial nitrogen fertilizer industry, Dafert 128 



Some recent experiments with calcium cyanamid or nitrolime 128 



Marl for soil improvement from various formations in Hanover, Rosenbach 128 



The sootfall of London: Its amount, quality, and effects 128 



Fertilizers: Their source, purchase, and use, Smith 128 



Fertilizers in 1912, Guffroy 128 



Inspection and analyses of commercial fertilizers, Trowbridge et al 128 



Commercial fertilizers ] 28 



Tabulated analyses of connncrcial fertilizers, Frear 128 



Licensed commercial fertilizers, 1912, Woll 128 



AGRICULTURAL BOTANY. 



The function of manganese in plant growth, Kelley 129 



The influence of manganese on Aspergillus niger, Bertrand and Javillier 129 



Stimulating action of manganese and copper sulphates on plants, Monteniartini . 130 



Wheat seedlings as affected by acid or alkali, Breazeale and LeClerc 130 



New studies on narcosis in plants, Richter 130 



Stimulation of plants through small quantities of poisonous substances, Fred. . 131 



Action of carbon bisulphid on germinability of grain, Morettini 131 



The action of carbon bisulphid on the germination of wheat, Fantechi 131 



Treatment of seeds with hydrogen peroxid, Mi^.^e 132 



Hydrocyanic acid formation in germination of seeds, Ravenna and Vecrhi. .. . 132 



Investigations on the germination of weed seeds, Munerati and Zapparoli 132 



Dependence of the respiration of plants on the lipoids, Stanevich 132 



Recent investigations on formation of starch in plant cells, Guilliermond 133 



Glycogen in phanerogams and its relation to oxalate of lime, Politis 133 



Origin and office of oxalate of lime in plants, Politis 133 



Essential oils as the cause of sap movements, Giglioli 133 



Formation of alkaloids in tobacco, Ravenna and Babini 133 



Heliotropism in radium illumination, Molisch 134 



Investigations on Mucorinese and their relations to soils, Hagem 134 



The slime or gum of Rhizobium leguminosarum, Greig-Smith ■ 134 



FIELD CROPS. 



[Field crops at the Hawaii Station], Kellev, Wilcox, and McClelland 135 



[Rotation and fertilizer tests], Eustace ana Shoesmith 136 



Cooperative grain investigations at McPherson, Kans., 1904-1909, Cory 137 



Studies of the principal buckwheat species, Mi^ge 137 



The condition of Kansas seed corn, Schafer 138 



The seed com situation, Williams 138 



Some data for oat growers, Burnett 138 



Composition of oats as affected by fertilization, hilling, and seeding, Ebert. . 139 



Rice. — A possible new industry for California, Shaw and Gaumnitz 140 



Soy beans as a supplementary silage crop, Minns 140 



Report on field trials with varieties of swedes in 1910, Harrison and Stokes 141 



Adulteration and misbranding of clover, grass, and hairy vetch, Galloway 141 



Seed tests made at the station during 1911, French '. 142 



Quality of farm seeds in 1911, Hall 142 



Methods of keeping crop records at the Michigan Station, Spragg 142 



HORTICULTURE. 



Report of the horticulturist, Higgins 142 



Report of the South Haven substation, Wilken 143 



The horticultural industries in Germany ! 144 



List of secretaries of state and other horticultural societies 144 



The profitable culture of vegetables, Smith 144 



List of publications important to fruit growers, Stewart 144 



[Orchard cover crops], Eustace 144 



Profitable crops for the young orchard. Price 144 



Methods and implements in orchard cultivation, Surface 144 



Spraying practice for orchard and garden, Beach 144 



