n CONTENTS. 



Page. 



A raodification of a method for examining fermentation gases, Frieber 505 



The volumetric determination of manganese, Metzger and Marrs 505 



Error of analysis and nitrogen economy of arable soils, Pfeiffer and Blanck 505 



Note on the volatility of sulphuric acid when used in vacuum drying, Gore. . . 505 



Direct determination of moisture in foods by distillation, Michel 505 



A special flask for the rapid determination of water in flour and meal, Cox. . . 506 



Determination of moisture in maize for export, Vipond 506 



Contribution to the study of flour, Gury 506 



Determination of water with Hoffman's apparatus, von Hay din 507 



Investigations in regard to varieties of egg yolk, Emnierich 507 



A new instrument for measuring strength of alcoholic liquids 508 



An attempt to estimate the vitamin fraction in milk, Funk 508 



Aluminum hydroxid as a protein precipitant in milk, Welker and Marsh 508 



Adulteration of milk. — Watering, Porcher 508 



A rapid method for determining the addition of water to buttermilk, Hoyberg. . 508 



A rapid method of determining the solids in evaporated milk, Hunziker 509 



Studies on flax retting, Tadokoro _ 509 



Progress made in the manufacture of beet sugar in 1912, von Lippmann 510 



METEOROLOGY — WATER. 



• 



Reports on agricultural meteorology 510 



Agricultural meteorology, Yranzo _ 510 



Making weather forecasts more useful in the open country, VanderUnden 510 



Report of the Iowa Weather and Crop Service for 1912, C'happel 510 



Division of meteorology, Helme 510 



English climate and some of its variations, Marriott 510 



Climate and meteorology of Australia 511 



The station of agricultural meteorology at Riudabella (Tarragon), Spain, Gil. . . 511 



The rains of the Nile Basin and the Nile flood of 1911, Craig ._ 511 



Protection against hail by means of electric niagaras in France, Lasnier 511 



"Gnamma holes" and "night wells," Maclaren 511 



The action of an alkaline natural water on lead, Liverseege and Knapp 511 



Water purification and sewage disposal, Tillmans, trans, by Taylor 511 



Scientific sewage and garbage disposal 512 



Sewage sludge disposal 512 



The Cairo sewage farm at Gebel el Asfar, Smith 512 



SOILS — FERTILIZERS. 



Agricultural chemistry — chemistry of the soil, Andre 512 



Methods and aims of soil investigation and teaching, Blanck 512 



Soil analysis, Gomez • 513 



Chemical composition of soils, Vernadskii 513 



Colloidal chemistry and its importance in soils, Niklas 513 



The climatic soil zones and their characteristic soil formations, Ohly 514 



Review of climatic soil zones, Vogel von Falchenstein 514 



Land climate and sea climate high moors, Stremme 514 



Properties of the peat soils of Picardy, Coquide 514 



Appearance of bleached soil and ortstein in the North Sea marshes, Schucht. . 514 



Productiveness of soils poor in mineral plant food, Vogel von Falckenstein 514 



Polygon soils and " thufur " on Iceland, Thoroddsen 515 



Problems in the study of forest soils, Borghesani 515 



The gases of swamp rice soils, Harrison and Subramania Aiyer 515 



The organic constituents of soils _ 516 



Soil studies by the aid of their water solutions, Ballenegger 516 



Ultramicroscopy of soil extracts, Muravianskii 516 



^licroflora of the Roman experimental field, Perotti 516 



A study of the formation of nitrates in various types of Virginia soil, Fred 516 



Nitrification in acid or nonbasic soils. Temple 517 



The fertility of the soil, Russell 517 



The increase of plant food in soils, Gimingham 517 



Tank experiments on certain salts in sandy loam and adobe soils, Hare et al. . 517 



Oat sick land, Fowlie 518 



[Unproductive peat or muck soils], Wiancko 518 



Reclamation of an unproductive soil of the Kankakee marsh region, Abbott et al. 518 



