CONTENTS. Ill 



Page. 



Nitrogen and phosphorus as related to permanent agriculture, Lane. 518 



Texas phosphates, Hornaday 518 



Possible sources of potash, Erdmann 518 



Potash fertilizers, Brunerie 1 518 



A new method of using potash salts and other fertilizers, Hiltner 518 



The rational use of lime, Brooks 519 



The distribution, composition, and cost of lime, Haskins and Merrill 519 



Lime: Its properties and uses 519 



Action of sulphiu" as a fertilizer, Chancrin and Desriot 519 



Sulphur requirements of crops in relation to the supply. Hart and Peterson. . 519, 520 



Catalytic fertilizers in the culture of beets, Bertrand 520 



The use of kelp and rockweed as a fertilizer 521 



Value of tobacco-juice residues as manure 521 



Purchasing a fertilizer, Thompson 521 



Commercial fertilizers, Fulmer 521 



Commercial fertilizers, Jones, jr., et al 521 



Analyses of commercial fertilizers, Hardin et al 521 



Terms used in the chemical fertilizer trade and superphosphate industry 521 



AGRICULTURAL BOTANY. 



Translocation of plant food in wheat seedlings, Le Clerc and Breazeale 521 



The biochemical side of carbon dioxid assimilation by green plants, Grafe 522 



The selective power of plants for dextrose and levulose, Lindet 522 



On the role of nucleoprotein in plants, Zaleski 522 



Physiological importance of manganese and aluminum in the cell, Stoklasa 522 



Movements of the metabolic products of the leaf through petioles, Deleano 523 



Light and the beha\aor of organisms. Mast 523 



Changes of plant organs under the influence of radium, Fabre 523 



The action of radium on plant structures, Fabre 524 



Parasitic fungi and the host — I, Toxicity of tannin, Cook and Taubenhaus 524 



The origin of the chloroplasts in the cotyledons of Helianthus annuus, Miller. . . 524 



Dimorphism of the ganetes of (Enothera, De Vries 525 



Hereditary characters and their modes of transmission, Walker 525 



Suggestions concerning the terminology of soil bacteria, Lipman 525 



The influence of bacteria upon soil fertility, Hutchinson 525 



Bacteriological methods for the estimation of soil acidity, Lipman 525 



The bacteriotoxins and the "agricere" of soils, Greig-Smith 525 



Experiments on ammonia and nitrate formation in soils, II, Lipman et al 526 



Role of nitrate reduction in metabolism of denitrifying bacteria, Wegner 526 



Legume bacteria, Edwards 527 



Nitrogen-gathering plants, Kellerman 527 



Studies on the organisms found in the root tubercles of cycads, Zach 527 



FIELD CROPS. 



[Field-husbandry experiments], McCready and Za\-itz 527 



Field experiments. Woods 529 



Some soiling crops for Pennsylvania, Mairs 530 



The harvest residues of cereals and field peas, Schulze 530 



The weight of the kernel and its importance, Quante 531 



Methods of conducting variety tests, Scholz 531 



Test of local and improved varieties of barley, Pammer and Freudl 531 



Barley culture in Wisconsin, Moore and Stone 531 



The management of clover in corn-belt rotations, Drake 531 



Bird's-foot clover and its value as a pasture grass, Witte 531 



Increased yields of corn from hybrid seed, Collins 531 



Corn growing in Washington, Severance 531 



Some possibilities of the cowpea in Macon County, Alabama, Carver 532 



Groundnuts in the Bombay Deccan, Kelkar 532 



Variety tests of oats, Gardner and Runk 532 



Field peas on a Palouse wheat farm,i Severance 533 



Productiveness and degeneracy of the Irish potato, Fitch 533 



The potato and its culture, Shepperd and Chm-chill 534 



The potato industry of Colorado, Fitch and Bennett 534 



Study on the culture of the sugar beet in different countriea. Pellet 534 



