CONTENTS. in 



Page. 



The law of minimum 627 



The use of commercial fertilizers in Canada, Emslie 627 



The fertilizer industry 628 



AGRICULTURAL BOTANY. 



Indicator eignificance of vegetation in Tooele Valley, Utah, Kearney et al 628 



Stomatal cliaracteristics of varieties of sugar cane, Dunlop 628 



Storaata and drought resistance in maize, Wager 628 



Studies in the chlorophyll group, XIX, Borowska and Marchlewski 629 



The role of oxygen in germination, Shull 629 



Assimilation of nitrogen by yeast and fungi, Lindner and Naumann 629 



Relation between transpiration stream and absorption of salts, Hassc! bring 629 



Influence of the salts common in alkali soils on the growth of rice, Miyake. . . . 630 



Mutation in Penidllium glaucum and Aspergillus niger, Waterman 030 



Action of hydrogen ions, etc., on metabolism of Aspergillus niger, Waterman. . 630 



Relations of lipoids to electrical potential in plant organs, Loeb and Beutner . . 630 



Influence of anesthetics on electrical potential in tissues, Loeb and Beutner. . . 630 



Comparative histology of alfalfa and clovers, Winton 631 



Inlieritance of certain characters in double-throwing stocks, Saunders 631 



Mutation in tobacco, Hayes and Beinhart 631 



Breeding medicinal plants, Miller 631 



On the apparent absence of apogamy in (Enothera, Gates 631 



Lectures on agricultural bacteriology, Lohnis 631 



FIELD CROPS. 



Application of the method of least squares in agriculture, Frohlich 632 



On the application of the method of least squares, Frischauf 632 



On the standing room of individual plants m plant breeding, Mitscherlich 632 



[Demonstration work] 632 



[Reports on field crops] 632 



New sources of nitrogen 632 



Germination experiments with cereals in light and in darkness, Burgerstein. . . 633 



Observations on cereals in trial plats, Smith and Anderson 633 



Influence of local conditions on the development of cereals, von Seelhorst 633 



Influence of different spacing on the growth of the plant, Grundmann 633 



Experiments on feeding off cereal crops with sheep, Perkins and Spafford 633 



Mechanics of the unfolding of the embryo of the Graminese, Burgerstein 633 



New strains from the Alpine forms of pasture grasses, von Weinzierl 633 



Changes in the composition of the red clover plant, Ilaselhoff and Werner 634 



Trials with different strains of red clover at Svalof, 1907-1912, Witte 634 



The corn crops, Montgomery 635 



Report of the work in corn pollination, III, Fisher 635 



Cotton and corn variety tests, DeLoach 635 



Fertilizer experiments with cotton in south Alabama in 1913, Duggar et al 636 



Papers on cotton 636 



Color correlation in cowpeas, Spillman 636 



Flax experiments, 1911 636 



Breeding Linum usitatissimum for fiber, Djakonow 637 



The growing of linseed for feeding purposes 637 



Report on the manuring of mangels. Porter 637 



Commercial seed potato selection, Dean 637 



The branching of rice, Novell! 638 



The economics of paddy planting, Barritt 638 



The practical significance of the beet leaf, Plahn-Appiani 638 



Sugar beets in North Dakota, Ince 638 



Sugar-beet experiments, 1912 638 



Manurial experiments on sugar cane, De Verteuil 638 



Sugar cane in South Africa, Choles 639 



Experiments on manuring tobacco in Hungary, Kerpely 639 



Yield and quality in wheat, Howard and Leake ". 639 



Wheat storage, Sanderson 639 



Change in weighjf of grain in arid regions during storage, Harris and Thomas 639 



Salting Canada thistles, Blackman 639 



