994 



EXPERIMENT STATION EECOED. 



Page. 



Slugs, feeding habits 458 



Smallpox — 



complement fixation In 877 



In pigs, Cal 275 



Smelter fumes, effect on vegetation- 526 

 Smoke — 



as a source of atmospheric pol- 

 lution 715 



from lead works, effect on 



horses 278 



from Mt. Hood, U.S.D.A 414 



injury to plants 744 



pollution, plants as an index 289 



Snakes, destruction of field mice 751 



Snapdragon disease in Barbados 841 



Snow — 



determination of density 510 



nitrogen, cblorin, and sulphates 



in 615 



surface, condensation upon and 



evaporation from, U.S.D.A.- 413 

 survey on Cottonwood Creek, 



Idaho, U.S.D.A 614 



Soap solutions, analyses, N.Dak 661 



Social welfare in United States 791 



Sod oil, insectlcidal value 359 



Soda- 

 cellulose, notes 714 



lime, history and uses 804 



Sodium — 



acid phthalnte in acidimetry 



and alkalimetry 408 



arsenate-kerosene emulsion, in- 



spctlcidal value 652 



arsenite, effect on soils, U.S. 



D.A 421 



arsenite, killing of iiii»:liarked 



trees with 485 



chlorid. (Bee Salt.) 



fluorld, Insectlcidal value, 



Mich 252 



hydrate, effect on permea- 

 bility 429 



hypo-iodlte, neutral, action on 



formaldehyde 11 



lamp for polariscope 804 



nitrate, availability in relation 



to soils, N.J 130 



nitrate, effect on composition of 



meadow bay 620 



nitrate, effect on protein con- 

 tent of soy beans, N.J 141 



nitrate, fertilizing value 22, 



24,25,51.8,520,622,820 

 nitrate, fertilizing value, N.J-_ 129 



nitrate, fertilizing value. Pa. 128 



nitrate, fertilizing value as af- 

 fected by lime, N.J 132 



nitrate for cranberries, N.J 150 



nitrate for early vegetables, 



111 532 



nitrate, history and mana- 



facture 423 



pyrophosphate, toxicity 476 



Sodium — Continued. Page, 

 salts, effect on germination and 



growth of crops, U.S.D.A 125 



sulphur mixture, insectlcidal 



vTalue, U.S.D.A 60 



Soft drinks — 



examination, Ky 166 



use of second-hand kegs for, 



N.Dak 256 



Soil- 

 acidity, cause and detection 419 



acidity, determination 609 



aeration in relation to temper- 



ture, Mich 216 



bacteria, nonsymbiotic nitrogen- 

 fixing 815 



bacteria, potash-fixing power-- 815 

 bacteria, relation to fertilizers. 326 

 bacteria, relation to soil fer- 

 tility, U.S.D.A 619 



bacteria, relation to soil pro- 

 tozoa 326 



colloids, adsorptlve power 18 



colloids. Importance 816 



colloids, treatise 515 



condition, relation to bacterial 



activity 813 



erosion, notes 818, 885 



erosion, prevention, Mo 326 



erosion, prevention, N.C 819 



fatigue, review of literature 326 



fertility as affected by fertiliz- 

 ers 517 



fertility as affected by lime and 



chalk 221 



fertility, determination 218 



fertility, dyn.amic theory .812 



fertility, improvement 528 



fertility, maintenance 516,621 



fertility, maintenance, Iowa 722 



fertility, maintenance, Ohio 520 



fertility, notes 722 



fertility, notes. 111 22 



fertility, relation to bacteria 



U.S.D.A 019 



fertility, relation to sulphur 27 



fertility, relation to weeds, 



N.Dak 39 



fungi of Norway 226 



gases, studies 514 



humidity, effect on develop- 

 ment of cotton 337 



inoculation, review 218 



micro-organisms, longevity on 



drying, U.S.D.A " 732 



moisture as affected by crops.. 17 

 moisture, movement in relation 



to temperature, U.S.D.A 215 



moisture, relation to tempera- 

 ture. Pa 127 



moisture, studies, Tex 816 



physics, manual 293 



protozoa, activity, U.S.D.A 422 



protozoa, counting 513 



protozoa. Investigations, U.S. 



D^ 20 



