982 



EXPERIMENT STATION KECORD. 



L Vol. 35 



Silk— rage, 



culture in British colonies and 



dependencies 358 



production in 1913 56 



Silos— 



and silage, Wash 690 



concrete, treatise 294 



for prairie farms 690 



hollow tile, construction 792 



Silver fish, life history and parasites 657 



Silviculture — 



in Amei'ica 746 



revie\v of investigations 346 



treatise 346 



Simulidas of northern Chile, descrip- 

 tion 258 



fiimulium — 



n.spp., descriptions 362 



reptans injurious to grazing ani- 

 mals 681 



tenuipes n.sp., description 258 



Sires — 



effect on dairy production, Iowa 570 



effect on dairy production, Ohio 564 



Sirups, analyses, Conn. State 558 



Sitona apacheana, notes, Wash 364 



Skim milk — 



for laying hens 479 



metallic flavor in, N.Y.Cornel)__ 277 



nutritive value 663 



Skins from China, disinfection 487 



Sky, blue color of, U.S.D.A 618 



Slag. (See Phosphatic slag.) 



Sleet — 



American definition, U.S.D.A 618 



forecasting, U.S.D.A 808 



Sludge, analyses, N.J 128 



Smelter fumes, effect on plants 28, 



213, 244 



Smoke — 



abatement in Great Britain 620 



effect on rest period in plants-- 436 



Injury in forests, studies 4;i6 



injury investigations, defects in 133 



injury to vegetation 620 



leaf injury or loss due to 243 



Smokehouses for prairie farms 600 



Smut — 



of grain and forage crops, Kans. 348 



treatment 46 



{See also Barley smut, Corn 

 smut, etc.) 



Snow — 



disappearance in high Siena 



Nevada of California, U.S.D.A. 419 



forecasting, U.S.D.A 808 



surveys, U.S.D.A 420, 506, 619 



Soap grease, preparation 317 



Soda in loess soils 809 



Sodium — 



ammonium sulphate, fertilizing 



value 126, 518 



benzoate, toxicity in the diet 473 



chlorid. {See Salt.) 



hydroxid as a disinfectant for 



hides and skins 882 



Sodium — Continued. Page, 

 nitrate, action as affected by dis- 

 tribution in soils 518 



nitrate, availability of nitrogen 



in 426 



nitrate, availability of nitrogen 



in, N.J 123 



nitrate, effect on action of phos- 

 phates 326 



nitrate, effect on soils. Pa 516 



nitrate, fertilizing value— 22, 30, 126, 

 218, 323, 325, 427, 518, 519, 629 



nitrate, fertilizing value. La 836 



nitrate, fertilizing value, N.J 125 



nitrate, fertilizing volue, Ohio 535 



nitrate, fertilizing value, W.Va. 22 



nitrate for apple trees, Oreg 540 



nitrate, industry and commerce- 428 

 salicylate, effect on metabolism 



in man 369 



salts, effect on plant growth, 



U.S.D.A 816 



salts, effect on soil colloids 622 



salts, production 24 



tungstate, effect on plant 



growth 434 



Soil- 

 acidity, cause and nature 722 



acidity, correction 727 



acidity, determination 23, 503 



acidity, experiments 324 



acidity, notes, N.J 120 



analyses as a guide to use of fer- 

 tilizers 215 



bacteria as affected by barnyard 



manure and water, U.S.D.A 814 



bacteria as affected by continu- 

 ous cropping, U.S.D.A 813 



bacteria, effect on rock phos- 

 phate, 111 723 



bacteria, investigations 626 



bacteria, nutrition of, Ohio 814 



bacteria, relation to soil fertil- 

 ity, Iowa 215 



bacteria, spore-forming, N.Y. 



State 523 



carbonates, determination 503 



colloids as affected by soluble 



salts 622 



colloids, notes, Hawaii 512 



colloids, studies 16, 319, 813 



conditions in Selby smoke zone- 213 

 fauna, rhizopods and flagellates 



in 121 



fertility as affected by sulphur- 728 



fertility, maintenance. 111 325 



flora as affected by leaching 514 



flora, nitrogen-flxing powers of- 320 



fungi, incubation studies 513 



gases, investigations 120, 212 



lime requirements 21 



micro-organisms, activities, N. 



Dak 25 



micro-organisms, ammonia con- 

 sumption by, N.Dak 729 



moisture, studies, N.Dak 212 



