n CONTENTS. 



Page. 



Detection of various mineral and alkaloidal poisons in waters, Breteau 410 



Determination of gases dissolved in waters and effluents, Swanson and HuJett. 410 



Determination of nitrogen by the Gunning-Atterberg method, Lebediantzev. . 410 



Determination of chlorin in vegetable matter, De Jong 410 



Determination of esters in citrus oils and extracts, Albright and Young 410 



A disturbing factor in Barfoed's test, Welker 411 



Determination of amino acids of feeding stuffs, II, Grindley et al 412 



The nephelometric estimation of piuin bases. Graves and Kober 412 



Use of ammonium hydroxid for extracting rosin from wood, Benson and Crites. 412 



METEOROLOGY. 



Reorganization of the meteorological service in Brazil 413 



Reading the weather, Longstreth 413 



Some Arabic weather sajdngs, Kn.sim 413 



Monthly Weather Re\'iew 413 



Climatological data for the United States by sections 414 



Meteorological observations at Massachusetts Station, Ostrander and Potter 414 



Atmospheric circulation and radiation, Bigelow 414 



Variations in the intensity of the heat rays from the sun, Kimball 415 



Volcanic dust veils and climatic variations, Arctowski 415 



Variation in annual rainfall , Hazen 415 



Temperature variations, Angot 415 



Yields in their relation to weather, Dir 415 



Practical ventilation, Bennett 416 



The measurement of humidity in air, Tschaplowitz 416 



Protection of life and property against lightning, Peters 416 



Efficacy of lightning rods. Smith 416 



SOILS — FERTILIZERS. 



Soil survey of Colquitt County, Georgia, Sweet and Dickey 417 



Soil survey of Dekalb County, Georgia, Long and Baldwin 417 



Soil survey ot Jackson County. Georgia, Long and Baldwin 417 



The soils and agricultural development of the Hudson Valley. Fippiu 417 



Soil Survey of Bladen County, >torth Carolina. Uardi.son et al 418 



Soil survey of Chesterfield County. South Carolina, Latimer et al 418 



Soils of western Washington, Stookey 418 



Soil survey of Dane County, Wisconsin, Geib, Taylor, and Conrey 418 



How great is the surface of a gram of surface soil? II, Ehrenberg 419 



New method of measuring concentration of soil solution, Bouyoucos and McCool . 419 



Soil acidity and methods for its detection, Truog 419 



Soil temiJerature, an important factor in scientific agriculture, Pritchard 419 



Influence of growth of cowpeas upon some properties of soil, Lo Clair 420 



Oxidation of organic matter in the soil, Fraps 420 



Effect of addition on availability of soil phosphates, Fraps 421 



Fate and effect of arsenic api)lied aa a spray for weeds, McGeorge 421 



Activity of soil protozoa, Koch 422 



Azotobacter and nitrogen fixation in Indian soils, Walton 422 



The nitrogen cycle in nature. Kaiser 423 



Manurial value of natural (dried) and of degreased sewage sludge. Voelcker. . 423 



Field trials with dried and degreased sewage sludges. Russell and Richards. . 423 



The Dickson centrifuge system of sewage treatment, Tripp 423 



Utilization of town sewage for manufacture of ammonium sulphate, Kaluzhskil 424 



The phosphate deposits of Florida, Mat«)n 424 



Potash from wood and plant ashes, Bradley 425 



Potash in certain copper and gold ores, compiled by Butler 425 



Evaporation of potash brines. Hicks 425 



Lime and its uses in agriculture, Gilchrist 426 



Agricultural Ume analyses 426 



Fertilizer analyses 426 



Fertilizer analyses 426 



Analyses of fertilizers. Analyses of cotton-seed meal, Kilgore et al 426 



Analyses of commercial fertilizers, Wessels et al 426 



International movement of fertilizers and products useful to agriculture 426 



