CONTENTS. m 



Page. 



Calcium pyrophosphate, Menozzi 222 



The degree of fineness of fertilizer lime, Meyer. 222 



Evolution of sulphur in soil: A study of its oxidation, Brioux and Guerbet 222 



Sediments from Potomac and Shenandoah rivers, Smith and Fry 223 



The production and consumption of chemical fertilizers in the -vvorlfl 223 



Commercial fertilizers and their importance, Kubiorschky 223 



AGRICULTURAL BOTANY. 



Department of botanical research, MacDougal 223 



Origin of species by mutation, Sutton 224 



Coalescence of living plasmas and origin of races and species, Gautier 224 



Studies of natural and artificial parthenogenesis in Nicotiana, Wellington 224 



Periodicity of specific characters, Vuillemin 224 



Biology and radio-activity, Petit 224 



The determination of the rays concerned in chlorophyll synthesis, Dangeard . . 225 



New observations on chlorophyll assimilation, Dangeard 225 



Experiments with static electricity as related to cultivated plants, Trnka 225 



The growth of plants in, partially sterilized soils, Russell and Petherb ridge 225 



Constituents of culture solution and mycelium of molds from soils, Sullivan. . . 226 



Polyatomic alcohols as sources of carbon for molds, Neidig 226 



Influence of starch, peptone, and sugars on toxicity of nitrates, Kunkel 227 



Effect of chloroform on the respiratory exchanges of leaves, Thoday 227 



Tannin and starch in the assimilating organs of Leguminosse, Klenke 227 



The castor bean plant and laboratory air, Harvey 227 



Osmotic pressure in potatoes, Brannon 228 



Inhibition studies on seeds of Avena saliva, Plate 228 



Influence of moisture relations on species of Pinus, Hergt 228 



Defoliation: Its effects on the wood of Larix, Harper 228 



Root secretions of plants, Mitscherlich 228 



FIELD CROPS. 



Test work with forage and field crops], Calvino 228 



iCrop experiments for 1912], Lopez 229 



Crop experiments] 229 



Cooperative fertilizer and variety tests in Malmohus County, 1912, Forsberg 229 



Report on hemp and tobacco in Italy and Holland, Kluftinger et al 229 



Report of agricultural-chemical experiment station at Dublany, 1912, Anson . . 229 



Report of Bankipur Agricultural Experimental Station, 1911-12, Sherrard 229 



Notes on forage plants in Java and India, Piper 229 



Maguey (Cantala) and sisal in the Philippines, Saleeby 229 



Tests of raw phosphates, Galzew and Jakuschkin 229 



A'ariation in rust resistance of spring wheat, barley, and oats, Litwinow 230 



The laying down of permanent pastures and meadows, Lang 230 



The care of permanent meadows and pastures, Lang 230 



The production of grass and hay, Conner 230 



Propagating abacd (Manila hemp) from seed, Saleeby 230 



The renovation of the abaca (Manila hemp) industry, Saleeby 230 



Experiments with alfalfa in 1910 at Turkestan Experiment Station, Shereder.. 230 



Barley, Quante 230 



Svalof golden barley, Tedin 230 



Cultural experiments at Stettin, Stormer 230 



New directions in the work of the selection of maize, Ro^on 231 



Variety tests of imported maize, Rosenfeld 231 



A new variety of maize, Conner 231 



Distance to plant maize, Rosenfeld 232 



Fertilizing maize 232 



The effect of water level on the jdeld of cotton 232 



A report on the production of new cottons. Balls 232 



Experiments in cotton cultivation at Karaiasi, Transcaucasia, Dmitriveski 232 



Aimual report of the government cotton station at ^fvombo 232 



Cowpeas, Blouin " 232 



Don experiment field, Kolesnikov 232 



Fertilizers in the production of hemp, Palladius 232 



Studies on hemp culture in Italy, Bruck 232 



