15 



n CONTENTS. IVol. 43 



Page. 

 Determination of ioditl and bromid in mineral waters, Baughman and 



Skinner 1'^ 



The quantitative microanalysis of foods and feeding stuffs, Herter 14 



Determination of hictose in altered milk, Hildt 14 



Rapid method of estimating lead in cassia oil, Lubatti 14 



IMdhlems investigated at the color laboratory. Bureau of Chemistry, 



Gibbs 1^ 



Determination of saponification number of dark-colored resins, Sal- 



vaterra 



The fumaric acid fermentation of sugar, Wehmer lo 



Fruit cook book, Mertens 15 



Drying itn)l)lems of today, Sclimidt 15 



The casein industry, Federsen 15 



ilETKOKOLOGY. 



Predicting minimum temperatures from hygrometric data, Smith et al__ 15 



Forecasting frosts, Keen 16 



The relation between wind and evaporation, Gallenkamp 16 



Amount and temperature of evaporation and moisture need, Koppen 16 



Amount and temperature of evaporation and moisture need, Gallenkamp_ 16 



Effect of afforestation on hidden condensation, Descombes 16 



Action of trees in withdrawing water from the atmosphere, Descombes— 16 



Meteorological summary, 1918, Hendrix 16 



Meteorological data, McNess 17 



Climatology, Catrain 17 



[Phenological observations in the British Islands], Clark and Adames 17 



Meteorological review, Flammarion 17 



The rainfall regime of Tunis, Ginestous 18 



SOILS FERTILIZERS. 



A study of the nitrogen distribution in different soil types, Morrow 18 



The washing out of nitrates by drainage water, Russell and Richards 19 



The relations existing between the soil and its water content. Keen 20 



Evaporation of water out of sanded and unsanded moor, Tacke and 



Densch___ 20 



The Trufast test for sour soil, Fippin 20 



Reclaiming Iowa's "push" soils, Forman 21 



The improvement of wild meadow and tule land, Powers and Johnston 21 



Fertilizer needs of marsh .soils, Whitson and UlLsperger 22 



The utilization of moors for soil improvement, Rippert 22 



Covering with sand and fertilizing upland peat bogs, Hansen 23 



Maintaining the soil fertility on Wisconsin dairy farms, Musbach 23 



Soil fertility, Gurney 24 



Forest fertilization experiments in a heathered pine plantation, Ludwig 24 



Season most favorable for applying barnyard manure, Rhodin 24 



Observations on the guano of Sardinia, Giua 24 



Demand and supply of fixed inorganic nitrogen in United States, White__ 24 



The commercial oxidation of ammonia, Perley 25 



The caking of sulphate of ammonia, Atwater and Schulze 25 



Potassium nitrate from the Chilean nitrate industry, Holstein 25 



Doul)le salts of calcium and potassium sulphates, Anderson and Nestell__ 25 



Potash in 1918, Hicks 26 



Potassium salts 26 



Potash fertilizers 26 



Phosphoric acid. Brock 26 



Availability of phosphate.s — the agricultural lime industry, Burgess 26 



Absorption of lime by soils, Warth and Maung Po Saw 27 



Effect of zinc in soil tests with zinc and galvanized iron pots, Conner 27 



The cleavage of betain by the bacteria of " guanol," Koch and Oelsner 27 



Experiments with phos-pho-germs at the experiment stations, Johnson., 27 



Fertilizers, Voelcker 28 



[Commercial fertilizer law and registered fertilizer.s, 1919] , 28 



Commercial fertilizers, Curtis and Rodes , 28 



Inspection of commercial fertilizers for 1919, Smith , 28 



Analyse? of fertilizer— gpriag season, 19J^..„ „„ „ .=„.„:,. 88 



