58 
BUL. 1199 (SUP. 3), U. S. DEPT. OP AGRICULTURE 
Silos- 
cost of filling, Wis. Bui. 386. 
weight of silage, Mont. Bui. 191. 
Silt, Colorado River, Ariz. Tech. Bui. 8. 
Sires — 
dairy, breeding value, 111. Bui. 270. 
Guernsey, comparison, Mo. Res. Bui. 
79. 
Guernsey, progeny performance for 
milk yield, Me. Bui. 324, 327. 
Guernsey, transmitting qualities for 
milk production, Me. Bui. 329. 
Holstein-Friesian, Del. Bui. 145. 
(See also Bulls.) 
Sitophilus granarius, Minn. Tech.- Bui. 41. 
Sitophilus oryza, Minn. Tech. Bui. 41. 
Skim milk powders for calves, Mass. Bui. 
230. 
Sludge, sewage, studies, N. J. Bui. 427. 
Small cherry, cause, N. Y. Bui. 540. 
Small fruits — 
varieties, Ohio Bui. 394. 
(See also Brambles, Berries, and spe- 
cific crops.) 
Smut— 
of figs, Calif. Bui. 387! 
of wheat and oats, Ohio Bui. 390. 
Snakes of Iowa, Iowa Bui. 239. 
Social organizations, rural. (See Rural so- 
cial organizations.) 
Sodium carbonate — 
in alkali soils, Ariz. Tech. Bui. 13. 
in alkali soils, effect of calcium sul- 
phate. Ariz. Tech. Bui. 6. 
Sodium hydroxide, in alkali soils, Ariz. 
Tech. Bui. 13. 
Soil- 
bacteria, N. Y. State Tech. Bui. 115. 
experiment fields, 111. Bui. 273, 280; 
Mo. Bui. 238. 
fertility, experiments, Okla. Bui. 155. 
flora, N. Y. State Tech. Bui. 115. 
heterogeneity control, Minn. Tech. Bui. 
30. 
management, Md. Bui. 287. 
microorganisms, N. Y. "Cornell Mem. 
103. 
moisture and sod, effect on trees, N. Y. 
Cornell Mem. 91. 
moisture, effect of cultivation, Ark. 
Bui. 205. 
nitrogen, availability, N. J. Bui. 421. 
nitrogen, relation to nodule develop- 
ment by legumes, N. J. Bui. 436. 
organisms, effect on toxins, Ala. Bui. 
225. 
solutions, investigations, Calif. Hil- 
gardia, V. 1, No. 11. 
Soil surveys — 
Illinois — 
Johnson County, 111. Soil Rpt. 30. 
Marion County, 111. Soil Rpt. 34. 
Mercer County, 111. Soil Rpt. 29. 
Randolph County, 111. Soil Rpt. 
32. 
Soil surveys — Continued. 
Illinois — Continued. 
Rock Island County, 111. Soil Rpt. 
31. 
Saline County, 111. Soil Rpt. 33. 
Will County, 111. Soil Rpt. 35. 
Iowa — 
Dallas County. Iowa Soil Rpt. 39. 
Hardin County, Iowa Soil Rpt. 38. 
Jasper County, Iowa Soil Rpt. 42. 
O'Brien County, Iowa Soil Rpt. 43. 
Page County, Iowa Soil Rpt. 41. 
Woodbury County, Iowa Soil Rpt. 
40. 
Montana — 
Daniels County, Mont. Bui. 174. 
Phillips County, Mont. Bui. 199. 
Roosevelt County, Mont. Bui. 179. 
Valley County, Mont. Bui. 198. 
Ohio — 
Miami County, Ohio Soil Rpt. 1. 
Texas, Eastland, El Paso, Lubbock and 
San Saba Counties, Tex. Bui. 337. 
Soil temperature, effect of paper mulch, 
Calif. Hilgardia, V. 1, No. 15. 
Soil temperature, relation to plant disease, 
Wis. Res. Bui. 71. 
Soil type, and farm economy, Conn. Storrs 
Bui. 139. 
Soiling crops for cows, Iowa Bui. 231. 
Soils- 
acid, biological activities, Oreg. Bui. 
211. 
acid, effect of lime, Conn. Storrs Bui. 
141. 
adsorption and acidity, Mich. Tech. 
Bui. 73. 
alkali. (See Alkali soils.) 
and crops experiments, Ky. Bui. 272. 
bases, replaceable, Ariz. Tech. Bui. 9. 
brown loess, Mo. Bui. 235. 
calcareous, phosphates in, Ariz. Tech. 
Bui. 10. 
calcium sulfate for, N. Y. Cornell 
Mem. 97. 
Chatsworth area, New Jersey, compo- 
sition, N. J. Bui. 414. 
experiments with manures, Iowa Bui. 
236. 
fumigation with paradichlorobenzene, 
Calif. Bui. 411. 
Gilroy region, utilization, Calif. Hil- 
gardia, V. 1, No. 18. 
gypsum for, N. Y. Cornell Mem. 97. 
hill fertilization, Iowa Res. Bui. 87. 
microbiology, La. Bui. 194. 
nitrate, content, effect of cultivation. 
Ark. Bui. 205. 
nitrate depression, effect of crop resi- 
dues, N. Y. Cornell Mem. 95. 
organic matter in, Wash. Bui. 206. 
peat, crop experiments, Minn. Bui. 228. 
permeability, Ariz. Tech. Bui. 12. 
tillage, 111. Bui. 258. 
