CONTENTS. Ill 



Page. 



Utilization of atmospheric nitrogen by means of calcium and barium, Piccinini. 223 



The action of certain fertilizers on calcium cyanamid, Fascetti 223 



On the chlorin content of kainit, De Kuijter de Wildt 223 



Composition of Peruvian guano and its value as a fertilizer, Maschhaupt 223 



The utilization of locusts as fertilizer, Lavenir 224 



Mineral fertilizer, Wendel 224 



Absorptive capacity of peat litter under pressure, Lugner and Von Feilitzen. . 224 



Fertilizer trade in Hawaii, INIarques 224 



Commercial fertilizers; a quarter century of fertilizer inspection. Hills et al 224 



Mixing cnemical fertilizers on the farm, Morse 224 



AGRICULTURAL BOTANY. 



The relation of plant societies to evaporation, Transeau 224 



Does phosphorus play a part in the production of chlorophyll? Stoklasaetal. . 224 



Lactic and alcoholic fermentation in plant tissues, Stoklasa 225 



The effect of light on germination, Kinzel 225 



Stimulatingaction on germination of colloidal solutions, Micheels and De Heen. 225 



The ascent of water in trees, Ewart 225 



The constancy of mutants and the origin of disease resistance in plants, Bolley . 226 



The correlation of flower and fruit structure in Carica papaya, Wester 226 



The nectaries of cotton, Tyler 226 



Symbiosis in fern prothallia, Campbell 227 



FIELD CROPS. 



Dry farming in Idaho, Nelson 227 



Dry-land farming in the Great Plains area, Chilcott 227 



Notes on dry farming, Jardine 228 



Cropping systems for stock farms, Spillman 228 



Results of cooperative experiments in agriculture, Zavitz 228 



[Effects of manures on old land hay], Gilchrist 229 



The botanical history and classification of alfalfa, Scofleld 229 



Alopecurus a(jret>iis, Fruwirth 229 



Period of plant food assimilation and dry matter production in bush bean, Fest. 229 



Clover growing on loess and till soils of southern Iowa, Stevenson and Watson. 230 



The flax plant; its cultivation for seed and fiber, Saunders 231 



Millet, WilUams 231 



The deterioration of Red Texas oats in Kansas, Roberts and Freeman 231 



Canadian field pea, Atkinson 231 



Cooperative potato experiments for 1908, Green and Goddard 231 



Rice book 232 



The importance of sodium to the sugar beet, Andrlik and Urban 232 



Proteid substance produced in the sugar beet during the first year, Andrh'k 232 



Further studies on sugar-beet plants more than one year old, Strohmer et al.. 232 



Annual sugar beets, Deutsch 233 



Growing sugar-beet seed in South Dakota, Shepard 233 



Seedling canes and manurial experiments, D'Albuquerque and Bovell 233 



Growing tobacco under shade on the east coast of Sumatra, Hunger 234 



The art of seed selection and breeding, Shamel 234 



Improvement of grasses and other forage crops, Galloway 235 



Improvement of cereals, Perkins and Spafford 235 



Modifications in cereal crops induced by changes in their environment, Lyon. 235 



The germination of vegetable seeds. Brown and Goss 235 



Effect of animal digestion and fermentation on vitality of seeds, Oswald 236 



HORTICULTURE. 



Manuring and fertilizing truck crops. Close and White 236 



Truck farming in the Atlantic Coast States, Corbett 237 



Chile culture, Garcia 237 



[Variety tests, at Wisley, 1906-7] 237 



Report of experimental fields in South Holland for 1907, Claassen et al 237 



Experimental fruit stations of the Province of Quebec, Dupuis et al 237 



Miscellaneous greenhouse notes. Close, White, and Ballard 238 



New work of the Bureau of Plant Industry, Galloway 239 



New hybrid fruits, Hansen 239 



Promising new fruits, Taylor 239 



A study of the volume-increment on fruits, Riviere 239 



