CONTENTS. HI 



Page. 



Contributions to natural pure cultures. Stockbausen 521 



Efficiency of soil inoculation in production of root tubercles, Stevens 521 



Soil bacteriology and the fertilizer question, Lohnis 521 



Denitrification, Bebn 522 



On the conservation of nitrogen in manure. Macfarlane 522 



Chicken manure as fertilizer. Mankovski 522 



^\rtificial fertilizers: Their nature and functions. Hall 522 



Experiments on application of fertilizers on the chernozem, Karpov 522 



Experimental field of Moscow Agricultural Institute. 1903-5, Kaluzhski__ 522 



Experiments to test certain new fertilizing materials 522 



The use of calcium cyauamid in sugar-beet culture, Aulard 522 



Under what conditions is ammonium sulphate most effective? Miiller 523 



Experiments with mineral fertilizers in the Moscow Government in 190.", 523 



Artificial fertilizers in peasant farming, Dubenski 523 



The fertilizing value,of plaster, Dumont 523 



Influence of lime in connection with phosphatic fertilizers, Otryzanev__ 523 



On the use of calcium carbonate as a stable absorbent, Hofman-Bang 523 



Use of manganese compounds as fertilizers, Van Dam 523 



Intensive nitrification and establishment of niter beds, Miintz and Laint 524 



New nitrogenous manures 524 



Preparation of nitrogen-oxygen compounds from the air, Springfeldt 524 



Nitrate facts and figures, James 524 



Chemical manures in Egypt 524 



The consumi)tion of Stassfurt potash salts in France, Maizieres 524 



Phosphates and superphosphates, Collot 524 



Wool fertilizer 524 



Commercial fertilizers and chemicals, Hudson, McCaudless, et al 525 



Commercial fertilizers, Coburn 525 



Kansas law regulating sale of fertilizers, Burkett and Willard 525 



Inspection and analyses of cotton-seed meal in Mississippi, Hand et al 525 



Analyses and valuations of commercial fertilizers, Cathcart et al 526 



Commercial fertilizers and poisonous insecticides in 1906-7, Fraps 526 



AGRICULTURAL BOTANY. 



Tolerance of plants for the salts in alkali soils. Kearney and Harter 526 



The soil preferences of alpine and subalpine plants, Fernald 527 



The production of deleterious excretions by roots, Schreiner and Reed 527 



The galvanotropism of roots, Bayliss 527 



The nodule organism of the Leguminosas Harrison and Barlow 528 



Phytin as a source of phosphorus for some lower plants. Berthelot 528 



Lectures on plant physiology, Jost 529 



Plant physiology and ecology, Clements 529 



Plant breeding, de Vries , 529 



Studies in variation, Klebs 529 



American root drugs, Henkel 529 



Seeds and plants imported from December, 1905. to July, 1906 529 



FIELD (BOrS. 



The unequal efficiency of our cultivated plants, Strakosch 530 



The forage and fiber crops in America, Hunt 530 



The world's conmiercial products. Freeman and Chandler - 531 



Guide to experiments at Impington and other centers, Middleton 531 



I Soil moisture determinations 1. Nowell 531 



IWork with field crops], Buftum . 531 



Report of the chemists. Knight and Hepner 532 



Experiments with oats, millet, and various legumes, Soule and Vanatter__ 532 



Repoi't of the agrononnst. Hysloj) 532 



Single or continued selection in breeding work. Fruwirth 533 



The classification of brewing barley. Hubert 533 



The valuation of brewing barley. Prior 533 



Imported low-grade ciover and alfalfa seed. Brown and Crosby 533 



Growing alfalfa without irrigation in Washington, Elliott 534 



Farmers' institute bulletin, 1907, Perkins 534 



