n CONTENTS. [Vol. 41 



Page. 



Microdetermination of nitrogen and total solids in blood, Peters 617 



Determination of ammonia in blood, Folin 617 



Bacon curing on the farm, Fisher 617 



Home drying of fruits and vegetables, Kreager and Armstrong 617 



Industrial drying, Razous 618 



The manufacture of tomato products, Hier 618 



The manufacture of tomato paste, Shrader 618 



Vinegar from wine, Marescalehi 618 



Grape-shoot silage a source of alcohol and of tartaric acid. Ventre 618 



Simplified process for preparation of gluconic acid, Herzfeld and Lenart- 619 



An important consequence of industrial synthesis of ammonia, Claude — 619 



METEOBOLOGT. 



The climate of Liberia and its effect on man, Ross 619 



Climate of British Columbia, Denison 620 



Climate of Brazil 620 



Nitrogen and othei* compounds in rain and snow, Trieschmann 620 



SOILS — FERTILIZERS. 



A soil classification for Michigan, Sauer 620 



Soil survey of Beuna Vista County, Iowa, Davis and Warner 620 



Soil survey of Henry County, Iowa, Meyer and Benton 621 



Mississippi : Its geology, geography, soils, and mineral resources, Lowe__ 621 



The agricultural soils of the Italian colonies, Maugini 621 



Soils, Marchand 621 



Notes on some Poverty Bay soils, Aston 621 



The need and objects of a soil survey in the Punjab, Wilsdon 621 



A new method of analysis by washing and sedimentation, Wiegner 621 



Chemical composition of clay obtained by Atterberg method, Blanck 621 



Studies of water movement and soil erosion, Miller and Duley 622 



An investigation of soil water, Taylor 622 



Moisture studies at the Leffingwell Rancho, Allison 622 



Effect of soil alkali on plant growth, Harris 622 



On nitrification: II, Intensive nitrite formation in solution, Bonazzi 623 



Nitrate production in soil as affected by crop and cultivation, Albrecht 623 



A possible case of partial sterilization in soil, Kuowles 623 



The search for toxin producers, Greig-Smith 624 



'Unproductive soils, Grimaldi 624 



Timely soil topics, Bear et al 624 



The best systems of soil management in Missouri, Miller et al 624 



Soil fertility experiments, Williams 624 



On the persistence of arsonite of soda in the soil, Mally 625 



Liquid manure 626 



Fertilizers and their use in Canada, Shutt 626 



Fertilizers and fertilizing, Heinrich 626 



Home mixing of fertilizers, Fletcher 626 



Effect of commercial fertilizer on the corn crop. Miller and Duley 626 



The fertilizing value of activated sludge, Nasmith and McKay 627 



Government Guano Islands, Zeederberg 627 



Relative availability of nitrate and commercial organic nitrogen, Blair 627 



The manufacture of ammonia for fertilizer salts, Bosch 627 



Potassium ammonium nitrate, a new top-dressing for beets. Hoffmann 627 



Economic analysis of the world shortage in phosphate, Anderson 628 



The mineral superphosphate industry, Staub 628 



Artificial phosphatic slag, Bruno and Ronnet 628 



Relative value of different forms of phosphorus. Miller and Duley 628 



Future of the potash industry, Turrentine 628 



American potash in crop production, Fippin 628 



Potash recovery, Gellert 629 



Value of blast furnace du.st as a potash manure : Report on field trials 629 



Fertilizer from the effluent from potassium chlorid works, Hiittner 629 



Bracken as a source of potash, Purvis 629 



Bracken : Utilization and eradication. Berry 629 



Conunercial fertilizers, Proulx et al 630 



Digest and copy of fertilizer law 630 



