n CONTENTS. 



Page. 



Detection of small amounts of formaldehyde and its compounds, Fincke 506 



Utility of vacuum distilling methods for detecting formic atid, Merl 507 



Determination of formic acid in ketchup, Peters and Howard 507 



Unsaponifiability of mowrah fat and its significance. Berg and Angerhaueen. .. 507 



The detection of coconut oil in butter, Barthel and Sondd-n 508 



Estimation of water and fat content of butter with a new apparatus, Jungkunz. . 508 



A simplified and inexpensive oxidase apparatus, Bunzel 508 



Proposed new loop for use in bacteriological tests of disinfectants, St. John 509 



Home canning, IMiller 509 



Fruit preserving: Canning, bottling, jam making, and candying peel, Allen. . 509 



Manufacture of textile fibers from Epilobium angitstifolium, Schumann 509 



METEOROLOGY. 



Suggested changes of U. S. Weather Bureau in California, Binckley and Lee. . 509 



The influence of volcanic dust A^eils on climatic variation."?, Arctowski 509 



A report on Montana climate, Burke and Pinckney 510 



El'^eather observations and notes], Blake, Ilalsted, et al 510 



eteorology, Stupart 510 



Salton Sea water, Vinson and Catlin 511 



The Salton Sea, MacDougal 511 



Chemical composition of the water of Salton Sea, 1906-1913, Ross and Vinson. 511 



SOILS FERTILIZERS. 



Distribution of soil particles, Duke of Bedford and Pickering 511 



The decomposition products of the aluminum silicate rocks, Lacroix 511 



Soils of the Sassafras series, Bonsteel 512 



Soil siu-vey of Habersham County, Ga., Long and Hall 513 



Soil survey of Jones County, Ga., Long, Crabb, et al 513 



Soil survey of Talbot County, Ga.. Winston and Hawker 513 



Agiiculture of Sulphur Spring Valley, Ariz., Forbes 513 



Soil erosion, Ames 514 



Description of a wire cage for protection of pot experiments, Lipman et al 514 



Influence of bacteria in manure on green manure, Lipman et al 514 



Oxidation of manganous carbonate by microbes, Beijerinck 514 



Investigations into the nitrogen metabolism of soil. Green 514 



Nitrogen fixation in substrata poor and rich in nitrogen, Hanzawa 515 



Mutual influence of certain crops in relation to nitrogen, Kellerman and Wright. 515 



Availability of nitrate of soda and dried blood, Lipman et al 516 



[Production and consumption of Chilean nitrate] 516 



Nitrate production, Easterling 517 



Chilean nitrate statistics, Myers 517 



Nitrate of soda in 1914 517 



Sulphate of ammonia in 1914 517 



[German potash salts] 517 



Potash supplies from Germany 517 



Vegetation experiments, Lipman et al 518 



Magnesian and noumagnesian limestone in rotation expeiiments, Lipman et al. 518 



Methods and results in vegetation experiments, Lipman and Blair 519 



Utilization of the fish waste of the Pacific coast for fertilizer, Tun-entine 519 



Rejiort on commercial fertilizers, 1914, Jenldns and Street 519 



Inspection of commercial fertilizers, Haskins et al 520 



Commercial fertilizers, Hills et al 520 



AGRICULTURAL BOTANY. 



Plant physiology, Jost, trans, by Gibson 520 



Students' handbook to accompany Plants and Their Uses, Sai-gent 520 



Experiments on hybridization with Canna indica, Honing 520 



[Some correlation studies of hypocotyls], Halsted et al 520 



A peculiar negative correlation in OEnothera hybrids, ShuU 521 



Some objections to the mutation theory of De Vries, Jeffrey 521 



Explanation of apparent exception to Mendel's law of segregation, Tammes. . . 521 



Influence of position in the pod upon the weight of the bean seed, Hams 521 



Variation of structure and color of flowers under insolation, Rawson 522 



