CONTENTS. Ill 



Page. 



Fertilizer materials market 22 



Nitrate of soda in 1907, Maizieres 22 



Nitrate of soda 22 



Agricultural uses of crude ammonia, Bouant 22 



Influence of plant constituents on the properties of peat, Zailer and Wilk 22 



The nitrification of peat in artificial niter beds, Desprez 23 



Report on trials of machinery used in the peat industry, 1906 23 



The utilization of atmospheric nitrogen, Giovanni 23 



The high-tension arc and the tixation of nitrogen, Brion 24 



Experimental investigations on the high-tension arc, Brion 24 



The manufacture of calcium cyanamid, Kershaw 24 



The action of sulphuric acid on calcium cj'anamid, Jona 24 



Other uses for lime, Pardy 24 



The German potash industry, Kubierschky 24 



The manufacture of potash in North Caucasus 24 



Phosphate beds [of South Carolina] , Sloan 25 



The phosphate minerals from Elder Rock, Mawson, and Cooke 25 



Phosphatic slags, Marsais 25 



Phosphatic fertilizers, Fasoli 25 



On the reversion of phosphoric acid in superphosphates, Herbst 25 



The world's production of phosphates in 1907, Maizieres 26 



[South Carolina] marl, Sloan 26 



Commercial fertilizers, Jones, jr. , Haworth, and Proulx 26 



Commercial fertilizers. Hills and Jones 26 



AGRICULTURAL BOTANY. 



The occurrence of rennet in the Papaveracea*, Gerber 26 



Presence of a nitrate-reducing enzym in green plants, Irving and Hankinson. . 26 

 Role played by proteins and the decomposition products of albuminoids in fer- 

 mentation, Ehrlich 27 



The role and function of mineral salts in the life of the plant, Deleano 27 



The possible role of light in relation to Alpine plants, Shaw 27 



The carbon assimilation of Penicillium, Hasselbring 28 



Assimilation of ziuc by Sterigmafncystis nigra, Javillier 28 



Injury to vegetation and animal life by smelter wastes, Haywood 28 



FIELD CROPS. 



Studies on improvement of sand, marsh, and heavy clay soils, Whitson et al.. 29 



Relation of orchard cover crops to moisture and freezing, Delwiche and Moore. 30. 



The improvement of mountain meadows. Cotton 31 



Building up a run-down cotton plantation, Brodie 31 



Small farms in the corn belt, Warren 31 



Annual report of Porto Rico Experiment Station for 1907 [Field crops], May. 32 



Experiments with grain and forage plants, 1907, Moore, St(jne, and Delwiche.. 32 



Cooperative alfalfa work for 1908, Williams and (^oddard 33 



Barley culture in the northern Great Plains, Carleton 33 



Brewing barleys, Norgord 34 



The prickly pear as a farm crop, Griffiths 34 



The soy bean, Williams 34 



Effect of soil inoculation on soy beans, WoU and Olson 34 



[Fertilizer experiments with sugar beets during 1906], Woll and Stoddart 35 



[Fertilizer experiments with sugar beets during 1907] , Woll and Moore 35 



Sweet potatoes, Beattie 35 



Tobacco investigations for 1907, Moore and Rogers 35 



Eradication of farm weeds, Moore, Stone, and Hutton 36 



Report of the agronomist. East 36 



Corn breeding in Minnesota, Bull 38 



Plant breeding for farmers, Webber 38 



Cereal production of Europe, Rutter 38 



European grain trade, Rutter 38 



HORTICULTURE. 



Report of the horticulturist, lorns 38 



Influence of " bottom heat "in forcing cucumbers, Moore 40 



