CONTENTS. Ill 



Page. 



On the penetration of fertilizers into the soil, Demolon and Brouet 120 



The use of nitrate of soda in commercial fertilizers, Cathcart 120 



Composition, toxicity, and evolution of crude ammonia, Demolon and Brouet. 121 



Preliminary report on the peat deposits of Florida, Harper 121 



Potash salts of Galicia, Machalske 121 



A preliminary paper on the Florida phosphate deposits, Sellards 121 



Phosphate deposits [of Egypt] 121 



Constitution of Thomas slag, Blome 121 



On the action of an addition of alumina and silicic-ticid gels to the soil on the 



assimilation of phosphoric acid by plants, Pfeiffer and Blanck 121 



Manganese causing bare patches in soil 122 



Manganese in field experiments, Bartmann 122 



Columbus municipal garbage reduction plant, Osborn 122 



Fertilizer trade. Chase, Bright, and White 122 



Commercial fertilizers in the South 122 



Licensed commercial fertilizers, 1911, Woll 122 



AGRICULTURAL BOTANY. 



Action of nitrogen-fixing bacteria in the earth, Krainskii 122 



Experiments with Azotogen, nitragin, and infected soil, von Feilitzen 123 



The physiology of catalase and reductase, Palladin 123 



Observations on the growth and energy of germination of cereals, Viner 123 



Concerning the selective permeable membrane of wheat grains, Schroeder 123 



The role of living cells in the ascent of water in plants, Roshardt 123 



Relation of transpiration to water conteni of leaves in the ocotillo, Lloyd 124 



Light as a formative factor in gi'owth of Asparagus plumosus, Newcombe 124 



Respiration in air, in nitrogen, and in hydrogen, Duggar and Hill, jr 124 



Respiration and fermentation, Palladin 124 



Prochromogens of the respiratory chromogens of plants, Palladin 124 



Photochemical sjiithesis in the absence of chlorophyll, Stoklasa and Zdobnicky 125 



Chlorophyll in living chloroplasts, Ivanovskii 125 



The correlation between the osmotic pressure of nutrient solutions and the devel- 

 opment and chemical composition of plants, Malfuschitskil 125 



Influence of sugar solutions on respiration and growth, Maige and Nicolas 126 



Absorption of nutritive substances from the soil by the sunflower, Konovalov.. 126 



The assimilation of phosj)h(jric acid by plants, Pouget and Shushak 127 



The lime requirements of plants, Konovalov 127 



Influence of manganese on Aspergillus niger, Bertrand and Javillier 127 



The effect on plants of certain substances extracted from coal tar, Mirande 128 



Intumescences on foliage leaves produced by poisons, Marx 128 



Effects of severe freezing on vegetation in active growth, Butters and Rosendahl. 128 



Evaporation in its relation to the prairie problem, Shimek 129 



An isolated prairie grove and its ecological significance, Gleason 129 



Twin hybrids in OEnothera, with a suggestion as to their explanation. Gates 129 



Cryptomeric inheritance in Onagi'a, Gager 129 



Reversible sex mutants in Lychnis dioica, Shull 129 



FIELD CROPS. 



The history of cultivated plants, Reinhardt 130 



Theory and practice of plant breeding, Lang .' 130 



History of wheat, sugar beet, Jerusalem artichoke, and potato, De Vilmorin 130 



Wyoming forage plants and their composition. Knight, Hepner, and Nelson.. 130 



Electroculture, Griffet 131 



Experiments in electrocultm-e, Gerlich and Erlwein 131 



Electroculture, Weis 131 



Report on work by the agricultm^al institution at Rotholz, 1879-1904 132 



Report of work with barley, peas, and vetches at Svalof in 1909, Tedin 132 



Alfalfa management in Montana, Atkinson 132 



The time of appl>T[ng potash salts in buckwheat culture, Claussen 132 



Corn judging, Nelson 132 



Corn and cotton. Nelson 132 



Experiments with cotton, Duggar and Cauthen 132 



Does better cotton seed pay? Nelson 133 



Fighting the boll wee\il. Hinds 133 



Destroying boll weevils by clean fanning. Hinds 133 



