990 



EXPERIMENT STATION RECORD. 



[Vol. 43 



Smoke formations in air drainage, U.S.D.A., 



118. 

 Smuts of Indiana, list, 329. 



(See also Barley smut. Corn smut, 

 etc.) 

 Snapdragon — 



damping-off, notes, 658. 

 leaf spot, control, 658. 

 rust, control, N.H., 44. 

 rust, notes, 841. 

 Snow — 



and sleet, effect on New York City 



traffic, U.S.D.A., 120. 

 crystals, paper on, U.S.D.A., 119. 

 effect on development" of vegetation, 



509. 

 effect on growth of winter wheat, 417. 

 fertilizing value. Can., 728. 

 Snowfall — 



measurements, methods, U.S.D.A., 120. 

 relation to run-off in California, 618. 

 Snowstorm in Palestine, U.S.D.A., 120. 

 Snowstorms, blizzards, and chinooks, 



U.S.D.A., 120. 

 Soap — 



stock, sampling and examination, 805. 

 substitutes in Germany, 204. 

 tree, importation and use, 840. 

 Soaps containing calcium, ash of, 412. 

 Sodium-ammonium — 



nitrate, action and use, 125. 

 nitrate, fertilizing value, 221. 

 sulphate, action and use, 125. 

 Sodium — 



bicarbonate, effect on color of cooked 



vegetables, 458. 

 bisulphate, use in phosphate produc- 

 tion, 629. 

 carbonate and sodium chlorid, relative 



absorption by soil, 516. 

 chlorid — 



and sodium carbonate, relative 



absorption by soil, 516. 

 effect on availability of soil pot- 

 ash, Md., 121. 

 effect on composition of soil ex- 

 tracts, Mich., 124. 

 effect on maritime plants, 223. 

 effect on trees, 343. 

 fertilizing value, 630. 

 (See also Salt.) 

 compounds as neutralizing agents for 



cream, 76. 

 cyanid, ammonia production from, 220. 

 cyanid, for peach borer control. 359. 

 cyanid, use against subsoil nematodes, 



47. 

 ferrocyanid, ammonia production from, 



220. 

 nitrate — 



artificial, action and use, 125. 

 effect on composition of soil ex- 

 tracts, Mich., 124. 

 fertilizing value, 221, 627 ; Ala. 

 Col., 135; Can., 727; La., 627; 

 Tex., 37. 

 for orchards, Greg., 145. 



Sodium- — Continued. 



nitrate — continued. 



time of applying to corn and cot- 

 ton, Ala. Col., 233, 333. 

 oleate, gold number determination, 12. 

 perchlorate, disinfecting power, 79. 

 potassium cobaltic nitrite, verification 



of formula, 803. 

 salicylate, disinfecting power, 79. 

 salts, effect on soil structure, 516. 

 Soil- 

 absorption, studies, 624. 

 acidity — 



as affected by green manure, 212. 

 determination, 12, 21. 

 determination, factors affecting, 



312. 

 of virgin v. cultivated soil, N.Dak., 



319. 

 review of literature, 212. 

 studies, 612, 713. 

 tests. Wis., 622. 



((S'ee also Lime, Limestone, and 

 Liming.) 

 aeration, effect on lime requirement of 



muck soil, 212. 

 analysis, 504, 621. 



analysis as affected by moisture equiva- 

 lent, 210. 

 bacteria — 



correlation of colon and aerogenes 



types, 791. 

 effect of seasonal conditions, 



Iowa, 432. 

 effect on availability of phos- 

 phates, 630. 

 effect on etching power of roots, 



422. 

 potential activity of spores, 625. 

 compression, effect on germination, 



722. 

 contamination in poultry yards, 378. 

 elutriator, new, description, 210. 

 erosion, prevention, 281, 420, 481 ; 



Mo., 721. 

 extracts, effect of fertilizer salts on 



composition, Mich., 124. 

 extracts, salts from evaporation of, 



624. 

 fertility — 



experiments, Minn., 627, 814 ; 



N.Dak., 322 ; Ohio, 322. 

 maintenance, Ohio, 726. 

 maintenance in Queensland, 24. 

 maintenance on dairy farms, 23. 

 of meadows, Ohio, 322. 

 relation of sulphur to. 111., 517. 

 role of bacteria in, 124. 

 studies, Ky., 814. 

 inoculation. {See Legumes, inocula- 

 tion.) 

 making, requirements for, 209. 

 management, Md., 122 ; Mo., 722. 

 moisture — 



as affected by afforestation, 16. 

 as affected by manure, 722. 

 as affected by rolling, 722. 



