II CONTENTS. 



Page. 



On purification of sewage waters, Muntz and Laine 1023 



Nitrification of sewage, Reid 1023 



The bacterial treatment of sewage, Scott-Moncrieff 1023 



SOILS FERTILIZERS. 



Review of thie geograpliical and geological conditions of Alaska. Riihl 1023 



Agricultural-bacteriological examination of soils, Perotti 1023 



Investigations on capillarity, Ollivier 1024 



Carbon dioxid in soils, Stoklasa and Ernest 1024 



On lime concretions, Blanck 102-4 



ITlie effect of] volcanic asb on crops. Sands 1024 



Agricultural value of tbe phosphoric acid of Belgian subsoils, Schreiber__ 1024 



Availability of phosphates and soil acidity, Whitson and Stoddart 1024 



Nitrogen content of soils as affected by farming, Whitson et al 1025 



Denitrification in cultivated soils, Ampola and de CJrazia 1025 



Relation of soil bacteria to nitrogenous decomposition, Hoffmann 1026 



Observations on organisms related to BacHlKS ><ithtiH.s, Chester 1027 



Nitrogen assimilation by lower oi'ganisms, Heinze 1027 



Some new nitrogen bacteria with autotrophic habits of life, Kaserer 1028 



Apparatus for the preparation of lime nitrogen and ammonium sulphate. 1028 



Changes and decomposition products of lime nitrogen in soils, Kappen 1028 



Ex])eriments with lime nitrogen as a fertilizer, Schulze 1028 



Culture experiments with synthetic nitrate of lime. Schloesing, jr 1029 



Experiments with nitrogenous fertilizers at Halle, Schneidewind 1029 



Influence of lime and magnesia. Westhauser and Zielstorff 1029 



The value of crude ammonia, de Molinari and Ligot 1029 



Fertilization of cane lands. Carpenter 1030 



Report of the State chemist of Florida, 1905 and 1906, Rose 1030 



Fertilizer analyses. Patten and Moxness 1030 



Commercial fertilizers, Hills and Jones 1030 



AGRICULTURAL BOTANY. 



Seeds and plants imported from 1903 to 1905, Pieters 1030 



Relation of temperature and humidit.v to germination. Deneumostier 1030 



Influence of sea water on germination of seed. Kirger 1031 



The germination of orchids, Bernard 1031 



Cross inoculation of Leguminosjc and other plants. Bottomley 1031 



Formation of slime or gum by RhizobiuJii Ici/iiDiinosfinnii, Smith 1031 



The structure of Rliizohium Icffumiiiosaruiii. Smith 1032 



Distribution of prussic acid in the vegetable kingdom, Greshoff 1032 



Chemical aspects of cyanogenesis in plants, Dunstan and Henry 1032 



Translocation of essential oils, Charabot and Laloue 1033 



Weeds of the Province of Prince Edward Island, Lochhead 1033 



FIELD CROPS. 



Report of the Porto Rico Experiment Station for 1906 [Field crops], May_ 1033 



Demonstration farms, Schollander 1033 



Crop work at the northern substation farms, Moore and Delwiche 1033 



Report of experimental work on the Randolph County farm, 1906, Christie. 1034 



Field experiments, Whitson et al 1034 



Experiments with grains and forage plants, 1906, Moore and Stone 1034 



Report of the chemist [Field crops]. Penny 1035 



Crop production in western Nebraska, Sn.vder and Burnett 1036 



Principles of tillage and rotation, Da.v .• 1037 



Forage crops of high, medium, and low protein content, Snyder 1037 



Methods for the inoculation of leguminous crops, Moore and Hastings 1038 



Clover, alfalfa, and timothy seed for sale in Iowa, 1906, Pammel et al 1038 



Soy beans, cowpeas, and other forage crops, Wiancko and Fisher 1038 



Haymaking at Kenai Experiment Station, Ross 1039 



Alfalfa in Ohio, Williams and Kyle 1039 



Corn breeding and registration, Williams 1039 



