II CONTENTS. 



Page. 



The detection of arsenic by biological means, W. Hausmann 334 



A short method of estimating glycogen quantitatively, E. Pfiiiger 334 



Analyses of nicks, V. W. Clarke - 334 



Measurement of ultramicroscopic particles, 1 1. Siedentoph and R. Zsigmondy. 334 

 Hydrothermal equivalent of a Berthelol bomb calorimeter, \V. Jaeger and H. 



von Steinwehr - 334 



Platinum thermometers, W. Jaeger and II. von Steinwehr 334 



BOTANY. 



The influence of current electricity on plant gr< >wth, G. E. Stone .'!.*!4 



Influence of atmospherical electrical potential on plants, N. F. Monahan 335 



Carbon nutrition of plants by organic compouni Is, J. Laurent 335 



Assimilation of some ternary compounds by plants, 1'. Maze and A. Perrier .. 336 



Sexual reproduction in the Muc< irinea?, A. F. Blakeslee 336 



The anatomy of leaves of British grasses, L. Lewton-Brain 337 



The influence of oxygen on chlorophyll production, J. Friedel 337 



Report of the botanists, G. E. Stone and N. F. Monahan 337 



FERMENTATION — BACTERIOLOGY. 



Report of Bacteriological Laboratory of Ministry of Agriculture, A. Theoktistov. 337 



Chemical products of Bacillus coli communis and B. lactis se.rogen.es, L. F. Rettger. 338 

 Media for estimation of bacteria in water and sewage, S. De M. Gage and G. 0. 



Adams 338 



The activity of bacteria in the soil, 0. Bail 339 



The differential diagnosis of pathogenic bacteria, Omyelyanski 339 



The nitrifying organisms in sewage filters, Sehultz-Schultzenstein 339 



Notes on Saccharomyces anomalus, K. Saito 339 



Notes on s< ime ferments of diseased wines, P. Maze and P. Pacottet 339 



The effect of certain poisons on inorganic ferments, C. Jones 339 



The occurrence in fungi of ferments which break down amids, K. Shibata 340 



The formation of toxic products by vegetable enzvms, C. A. Browne, jr 340 



The endosperm enzym of the date palm, R. H. Pond 340 



Micro-organisms of soil and human welfare, T. J. Burrill 340 



Behavior of enzyms toward concentrated electric light, S. Schmidt-Nielsen 340 



ZOOLOGY. 



Method of Loflier for combating the mouse plague, J. Pfreimbtner 340 



Plague of field mice in France, G. H. Jackson : 340 



The extermination of rats, A . Negreiros 341 



The Parker rabbit exterminator 341 



Dingo trapping 341 



Importation of insectivorous birds, B. O. Clark 341 



The sparrow plague and its remedy, A. Bathgate 341 



Birds of Erie and Presque Isle, Erie County, Pennsylvania, W. E. C. Todd . . 341 



The marsh hawk and its beneficial effects in the destruction of mice 341 



Sawdust and fish life, A. P. Knight 341 



A fish which attacks cows, A. Miranda 342 



Zoological yearbook for 1903, P. Mayer 342 



[Monthly bulletin of the division of zoology], H. A. Surface 342 



Annual report of the division of zoology, H. A. Surface 342 



METEOROLOGY CLIMATOL< II , V. 



Report of the Chief of the Weather Bureau, 1902-3 342 



Observations at Blue Hill Meteorological Observatory, 1901 and 1902, A. L. 



Rotch .' 342 



Climate: Its physical basis and controlling factors, W. L. Moore 343 



Smoke as a preventive of frost, T. Haynes 343 



Annual precipitation in Oklahoma, C. M. Strong 343 



Observations on the "ortstein" formationsof southern Russia, V. N. Sukachev. 343 



Laterites and red soils of tropical and subtropical latitudes, K. D. Glinka 343 



The useful properties of clays, A. S. Cushman 343 



