CONTENTS. m 



Page. 



Fixation of ammonia by cell albumin, Bokorny 30 



A study of delayed germination in economic seeds, Rose 30 



The influence of silver nitrate on the germinability of wheat, Schroeder 31 



Influence of acids, alkalis, and alkali salts on growth of rice plants, Miyake 31 



Favorable influence of manganese on nodule bacteria of legumes, Olaru 31 



Radium as a means of forcing growth in plants, MoUsch 31 



Specific action of methyl glycocoll versus glycocoll, Schreiner and Skinner 31 



Toxic action of chemicals and mutation in maize, Jungelson 31 



Physiological isolation of types in the genus Xanthium, ShuU 32 



Temperature and distribution of marine algae, Setchell 32 



Polymorphism in fungi, Daniel 32 



Demonstrating biochemical activity of micro-organisms, Crabill and Reed 32 



E\adence for the general distribution of oxidases in plants, Reed 32 



Oxidation and reduction in relation to chromogens, Wolff and Rouchelmann. . 32 



The presence of reduction and oxidation regions in plant cells, Schneider 33 



Plant pigments: Their color and interrelationships, Horowitz 33 



Recent studies on the pigments of chromoleucites, Lubimenko 33 



Antioxidase of tomato plants, Lubimenko 33 



The experimental modification of ^erm plasm, MacDougal 33 



The protoplasm of plant cells and its colloidal properties, Czapek 33 



Growth and colloid hydratation in cacti. Long 34 



Effect of some trivalent and tetravalent cations on permeability, Osterhout. . . 34 



Atmometry and the porous cup atmometer, Livingston 34 



FIELD CROPS. 



Division of forage plants. — Summary of results, 1914, Malte et al 34 



Green manuring and cover plants, Munro 34 



The improvement of grasses and forage crops 34 



Dry-farming investigations in the United States, Briggs 34 



Alfalfa on land not naturally adapted to that crop. Barker 35 



Migration of reserve material to the seed in barley, Beaven 35 



The anatomy of the fruit and leaves of Bromus varieties, Szartorisz 35 



Home-grown seed corn, Doneghue 35 



Manuring of maize on Government Experiment Farm, Gwebi, Holborow 35 



Additional fertilizer experiments at Government Farm, Gwebi, Holborow 35 



Manurial experiments with cotton at Stirling plantation 35 



Linseed as a fiber plant in British East Africa, Dedonckele 35 



Queensland hemp as forage plant for the Southern States, Robert 35 



First report on the improvement of indigo in Bihar, Howard 35 



Second report on the improvement of indigo in Bihar, Howard 36 



Melilotus indica as a green manure crop in southern California, Mertz 36 



Oats of the Mediterranean countries, Trabut 36 



Culture of the potato, Wellington '. . 36 



The process of transplanting rice, NovelU 36 



New varieties of rice 36 



Experiments with rye on sandy soil, Schulze 37 



Green manuring with sanai in Bihar, Howard 37 



The economic value of the soy bean, Robert 37 



Report of progress in sugar beet trials for the season of 1914, Ince 37 



Variation m sugar content of beets diu-ing first year's growth, Munerati et al. . 37 



The relation of the foliage to the sugar content of beets, Malpeaux 38 



Influence of direction ot row on jdeid of sugar beets, Greisenegger - 38 



Fertilizing substances Uttle used for sugar beets, Munerari et al 38 



Lead nitrate as a catalytic fertilizer for sugar beets, Greisenegger .38 



Experimental error in field trials with sugar cane, Annett 38 



Paraguayan tobacco, Bertoni 38 



The improvement of tobacco cultivation in Bihar, Howard 39 



Time and method of tillage of wheat, Thorn and Holtz 39 



Varieties of hard spring wheat, Ball and Clark 39 



Fertility and weeds, Ince 39 



HORTICULTURE . 



Market gardening, Yeaw 39 



The vegetable industry in New Yark State -iO 



The fertilizer problem from the vegetable grower's standpoint, Durst 40 



