CONTENTS. ni 



AGRICULTURAL BOTANY. 



Page. 



Studies on variation and selection, Hagedoorn 822 



Graphic representation of Mendelian inheritance, Wagner 822 



Inheritance of the capacity for production, Roemer 822 



Morphology as a factor in determining relationships, Greenman 822 



The experimental study of genetic relationships, Bartlett 822 



The genetic relationship of parasites, Kern 823 



Systematic relationships among the nodule bacteria of some legumes, Kriiger. . 823 



Problems in soil bacteriologj-, Lipman 823 



Effect of certain organic soil constituents on fixation of nitrogen, Williams 823 



Selection of nitrogen compounds by Aspergillus, Zaleski and Pjiikow 824 



Formation of albumin in yeast, Zaleski and IsrailskA'- 824 



Theories of fermentation, Alsberg " 824 



Albuminous crystalloids in potato leaves, Hubert 824 



Anthocyanin in plants, Grafe 824 



A studj^ of chloroplasts, Ponomarew 824 



A contribution to the physiological theory regarding chlorophyll, Iwanowski. . 824 



Substances separated by plants in arid regions of Argentina, Spegazzini 825 



Changes due to climate and soil in cultivated crops, Bukovanskj' 825 



Phenological dates and meteorological data at Wauseon, Ohio, Smith 825 



Studies on the physiology- of germination, Heilpern 825 



The action of plant metabolism products on plants, I. II, Sigmund 825 



Light intensity and substratum as related to germination, Ottenwalder 826 



Influence of light on germination and early growth of plants, Carl 826 



The influence of light on etiolated leaves, Schonf eld 826 



Influence of humiditj' and illumination on length of seedlings, Jacobi 826 



The influence of air movements on illumination of foliage, von Wiesner 826 



Effect of high frequency currents on plants, Homberger 827 



The influence of chloroform on assimilation by chlorophyll, von Korosy 827 



Internal factors regulating plant growth, Dostil ' 827 



Cell adjustment following decapitation and inversion of shoot, Neefli 827 



The rise of sap m trees, Farenholtz 827 



Inventory of seeds and plants imported from January 1 to March 31, 1913 827 



FIELD CROPS. 



Management of irrigated land, Knorr 827 



Countj' experiment farms in Ohio. — Annual reports for 1914, Thorne 828 



[Field crops] work at Belle Fourche in 1914, Aune 829 



The work of the San Antonio experiment farm in 1914, Hastings 830 



Division of field husbandry'. — Summary of results. 1914, Graham et al 830 



Report of the Bavarian Cereal Breeding Station, 1912-13, Kiessling 831 



Results of variety tests"of wheat, oats, and rv'e, Garren 831 



Storing the grain crop, Hoffmann 831 



Zeller's hay and coal table 831 



Stacks, Rabate 831 



Selection of yellow alfalfa at Krasnokutsk Experimental Station, Konstantinov. 831 



A cage for isolation of flower stalk of mother beels. Munerati 832 



Red clover seed production : Pollination studies, Westgate and Coe 832 



Custom ginning as a factor in cotton-seed deterioration, Saimders and Cardon . . 833 



Inheritance in the cotton hybrid, Sea Island and native of St. Croix, Harland. 834 



Experiments with cotton in Sicily in 1914, Borzi 834 



Variation in the male hop, Hionulus lupulus, Wormald 834 



Classification of broom millets, Striusov 834 



Observations on potato culture, KotehiLkov 834 



Prairie erass, Hill 834 



The culture of rice in California, Chambliss and Adams 834 



Rye grass culture, Mayer Gmelin 835 



Uses of sorghum grain. Ball and Rothgeb 835 



Studies in Indian sugar canes. — I, Pimjab canes. Barber 835 



Morphological stud j' "of variation in wheats, Detzel 835 



Inheritance of awn'color in wheats, Kiessling et al 836 



Report of the diA-ision of agronomy and botany for 1915, Burgess 836 



A oeAice for sampling grain, seeds, and other material, Boerner 836 



Eradioation of ferns from pasture lands in the eastern United States, Cox 836 



