CONTENTS. Ill 



Page. 



Relation of calcareous soils to pineapple chlorosis, Gile 121 



Effect of soluble salts on the absorption of phosphates by soils, Patten 122 



The soil solution, Cameron 122 



On the chemical nature of humus acids, Rindell 123 



[Address of the chairman of the subsection of agriculture], Hall 123 



Micro-organisms other than bacteria and soil fertility, Russell and Hutchinson. 123 



The fixation of nitrogen by free living soil bacteria, Bottomley 123 



Nitrogen fixation by yeasts and other fungi, Lipman 123 



Six years' experiments with nitragin inoculation, Schindler 123 



Different kinds of stable manure as sources of phosphoric acid, Egorov 123 



The manufacture of chemical manures, Fritsch 124 



Availability of nitrogenous materials shown by ammonification, Lipman et al. 124 



Lime nitrogen, anunonium sulphate, and sodium nitrate, Wehnert 125 



Active phosphoric acid and pot experiments, Fraps 125 



Phosphates, Richards, Mansfield, Gale, and Blackwelder 125 



Thomas meal, Hissink and A' an Kampen 126 



[Experiments with manganese sulphate on tobacco], Mach 126 



The composition of seaweed and its use as manure 126 



Utilization of kelp, Norton 126 



Analyses of Crotalaria 126 



The fertilizing value of sisal waste, Lommel 126 



[^liscellaneous analyses, 1910], Rose 127 



Fertilizers, Rose and Heimbrirger 127 



[Fertilizer inspection in Ohio, Lord and Vivian 127 



Analyses of commercial fertilizers, Brackett 127 



Georgia's new fertilizer law 127 



AGRICULTURAL BOTANY. 



Investigations on the effect of etherization on plant metabolism, Hempel 127 



Delayed germination, Pammel and King 128 



Dimorphic leaves of cotton and allied plants in relation to heredity. Cook 128 



Honey plants of California, Richter 128 



Seeds and plants imported from July 1 to September 30, 1910 128 



Seeds and plants imported from October 1 to December 31, 1910 128 



FIELD CROPS. 



The importance of water in the life of cultivated plants, von Seelhorst 128 



The root development of crops grown alone or in mixtures, Kaserer 129 



Fertilization of oil-producing crops, Ramnek 129 



Alpine pastures, Spampani -.•••: ^^^ 



Experiments on the germ-ripening of grain, Kiessling 130 



Work with cereals at the Ploty station in 1909 131 



Distribution of improved seed grain in Kansas, Ten Eyck 131 



Alfalfa on Wildwood Farm and how to succeed with it, Folmer 131 



The determination of the percentage of hull in barley, Kamnitz 132 



The hardness of the seed coat in clover, Romano wskij -Roman jko 132 



Winter enimer, Carleton _ 132 



Growing and using mangels and forage sugar beets, Grisdale and Shutt 132 



Peanut culture in Kamerun 132 



On the cultivation in Uruguay of Lolium temulentum ceptochoeton, Alvarez 132 



Sulla {Hedysannn coronarium) 133 



Breeding experiments with tobacco, Lodewijks 133 



A note upon the method of applying fertilizers for the tobacco crop, Blackshaw . 133 



Manuring tobacco on Mr. L. Black's farm, Salisbury, Blackshaw 133 



Soil and climatic factors influencing composition of wheat, Shaw and Walters. . 133 



Wheat, Roberts and Kinney 134 



Wheat growing in Canada, the United States, and the Argentine, Rutter 134 



Tillage experiments with the plow, Sutton, Ditzell, and Kelly 135 



Thick and thin seeding trials, Sutton et al ._ 135 



Behavior of Australian varieties of wheat when grown in England 135 



Wheat from Sunpan, China, Flaksberger 135 



The milling and baking qualities of Indian wheats, Howard 135 



Weed seeds in the grains found on the markets of Jscheljabinsk, Malzew 135 



Field weeds of the Cherson government, Paczoski • • 135 



