994 



EXPERIMENT STATION RECORD. 



Snowfall — Continued. Page. 

 In eastern United States, 



U.S.D.A lis 



measurement 776 



Snowflakes, gigantic, U.S.D.A 118 



Soaps, analyses, N.Dak 753 



Social — 



centers in Kansas 694 



survey in norttieastern Minne- 

 sota 786 



survey in Red River Valley, 



Minnesota 593 



survey in Walworth County, 



Wis 394 



Sodium — 



arsenite, effect on soils, Hawaii- 623 

 carbonate, toxicity toward bar- 

 ley, U.S.D.A 323 



chlorid. (See Salt.) 

 dichromate for liberation of 

 formaldehyde gas from water 



solutions 12 



nitrate, application to winter 



grains 125 



nitrate, effect on flower size of 



tobacco 435 



nitrate, effect on germinating 



plants 128 



nitrate, effect on peaches, W.Va_ 840 



nitrate, effect on sugar beets 434 



nitrate, effect on tobacco, Ohio_ 732 

 nitrate, effect on wheat yield__ 217 



nitrate, fertilizing value 219 



nitrate, fertilizing value, Me 33 



nitrate, fertilizing value, Ohio_ 829 



nitrate for cranberries. Mass 341 



nitrate for grass lands 527 



nitrate industry in Austria- 

 Hungary 822 



nitrate, production and use — 218, 219 

 nucleinate, effect on coagulation 



of blood and milk 177 



nucleinate, importance in the 



animal organism 758 



sulphate, toxicity toward bar- 

 ley, U.S.D.A 323 



sulphocyanate, use against tu- 

 berculosis 877 



tellurite as a test for viability 



of tubercle bacilli ._ 877 



V. potash for sugar beets 135 



Soil- 

 acidity, determination. Wis 206 



bacteria as affected by alkali 



salts 323 



bacteria as affected by phos- 

 phates and sulphates, Wis 515 



bacteria in relation to protozoa- 515 

 bacteriology, laboratory manual- 791 

 bacteriology, review of investi- 

 gations 513 



bacteriology, studies 120, 823 



colloids, behavior in presence of 



soluble salts 324 



colloids, role of 321, 513 



Soil — Continued. Page. 



constituents, organic, effect on 

 nitrogen fixation by Azotobac- 

 ter 823 



constituents, organic, effect on 

 nitrogen fixation by Azotobac- 

 ter, Va 620 



fatigue, studies 31 



fertility, determination. Wash 97 



fertility, misconceptions con- 

 cerning 721 



fertility, notes 695 



fertility, principles of, Ky 712 



fertility, relation to chemical 



composition 421 



gas, radio-activity 211 



homogeneity, correlation coeffi- 

 cient for 727 



milling machines, tests 891 



moisture, as affected by density 



of stand of trees 816 



moisture as affected by ferti- 

 lizers, U.S.D.A 217 



moisture as affected by field 



crops, N.Dak 225 



moisture, conservation 217 



moisture, effect on rate of in- 

 crease of sugar-beet root 



louse, U.S.D.A 357 



moisture, loss by percolation, 



Tex 619 



nitrates as affected by green 



manuring, Va 721 



nitrates, effect on wheat yield — 217 



nitrogen, forms of 513 



organisms as affected by carbon 



bisulphid. Wis 323 



protozoa, counting ^ 809 



protozoa, studies 621 



solution, concentration in rela- 

 tion to plant growth 223 



solution, nature and methods of 



extraction 322 



survey in Illinois, Bond County, 



m ^ 21 



survey in Illinois, Lake County, 



111 1- 415 



survey in Illinois, McLean 



County, 111 717 



surveys in Kentucky 510, 511 



tank experiments, Fla 24 



temperature as affected by culti- 

 vation 510 



texture, relation to water level- 806 

 zones, vertical, in mountainous 



Russia 418 



Soils — 



absorption of phosphoric acid- 515 

 absorptive power for fertilizers, 



P.R 122 



acid, of Japan, colloidal proper- 

 ties 215 



adsorption in 22, 411, 420 



aeration and drainage. Wash — 97 



alkali, improvement, Iowa 416 



alkali, irrigation 419 



