II CONTENTS. [Vol. 38 



Page. 



Paper pulp filter in estimation oi calcium and magnesium, Jodidi and Kellogg. 506 



A quantitative estimation of acetic, propionic, and butyric acids, C'rowell 506 



The identification and estimation of lead in water, I, Meldrum 506 



The manganese content of the ash of certain drugs, Westman and Rowat 506 



The inversion and determination of cane sugar, Rose 507 



Preservation of plant juices for analysis of sugar content, Spriestersbach 507 



Home canning of meats _ 507 



How to diy fruits and vegetables for home consumption, Matthews 507 



Action of manganese sulphate in wine fermentation, Lara 507 



Alcohol from discard molasses in the Philippine Islands, Brill and Thiu-low.... 508 



A handbook for cane-sugar manufactiuers and their chemists, Spencer 508 



Modern margarin technology, Clayton 508 



Determination of the rubber content of latex in the mixing tank, Hartjens 508 



Safety for the household. — VI, Hazards arising from the use of chemicals 508 



METEOROLOGY. 



Some temperature correlations in the United States, Blair 509 



Weather and the yield of winter wheat ._ 509 



Influence of weather on nitrogen acids in rainfall and atmosphere, Masson 509 



Lunar period in the rates of evaporation and rainfall, Sutton 510 



Forests and rainfall experiments 510 



Monthly Weather Review 510 



Notes on the climate of France and Belgium, Day 511 



SOILS — FERTILIZERS. 



Soil acidity and the hydrolytic ratio in soils, Spurway 511 



Soil solution obtained by action of a hydraulic press, Ramann et al 512 



Classification of soils according to electrical conductivity, von Howath 512 



Soil survey of Pickens County, Ala., O'Neal, jr., et al... 512 



Soil survey of Craighead County, Ark., Deeter and Davis 513 



Origin and properties of agricultural soils, especially of Java, Mohr 513 



Description of the coffee soils of Pasoeroean and Kedui, Java, Senstius 513 



Sticky soils (kleefgrond) and red soil (terra rossa) of Limburg, Hissink 513 



Soil survey. — I, Pas Geometriques 513 



Soil survey. — II, Grand Port 514 



Soil flora studies, I-V, Conn ._ _ 514 



Recent work at Rothamsted on the partial sterilization of soil, Russell 514 



Treatment of peat beds to prevent loss of nitrogen by bacterial action, Arnd. . . 514 



Utilization of fertilizer constituents in cane molasses. Cross and Harris 515 



The rate of ammonia formation from cyanamid, Kullgren 516 



Comparison of lime nitrogen with ammonium sulphate^ Geerts - - - ._ 516 



Comparative tests of sources of nitrogen on Coastal Plains soils, Keitt 517 



Relation of phosphorus and nitrogen to composition of wheat, Ames and Boltz . 518 



Solubility of phosphoric acid in phosphates and phosphatic slag, Aita 519 



Factors influencing solubility of phosphoric oxid in fertilizers. Flack 519 



Effect of phosphatic manures on green crop when applied without other manure. . 519 



The utilization of Thomas-meal phosphoric acid, Mitscherlich 519 



Experiments with a new potash -phosphoric acid fertilizer, Remy. 519 



Schroder's phosphate-potash, its preparation, action, and utilization, Popp... 520 



Potash from tule and the fertilizer value of certain marsh plants, Hibbard 520 



The importance of liming, Hughes : • ■ • v ^^^ 



The action of precipitated magnesium carbonate on soils, Kelley 520 



Artificial fertilizers: Prewar and war cost, Robertson 521 



Analyses of commercial fertilizers, Wessels 521 



Analyses of commercial fertilizers, Brackett et al 521 



AGRICULTURAL BOTANY. 



Ecological studies in zone between prairie and woodland. Weaver and Thiel. . 521 



Redwoods, rainfall, and fog, Cooper 522 



Incipient drying and temporary and permanent wilting of plants, Livingeton. 522 



Vapor tension deficit as index of moisture condition of air, Livingston 522 



Atmometric units, LiAdngston - 523 



Simplified apparatus for measuring conductivity of electrolytes, Hibbard 523 



Method for determination of osmotic pressure of sap, Harrington and Hibbard. . 523 



