18 DEPAKTMENT OF AGBICULTURE, BULLS. 76-100. 



"Snubs," use in unloading flumes, 87, 23. 



Soda, caustic, effect on cellulose, results of investigations, 80, 4-8. 



Sodium nitrate, optical constants, 97, 10. 



Soil treatment, use in potato powdery scab control, methods, etc., studies, 82, 13. 



Sorrel, sheep, host of wireworm, use of lime in control, 78, 24. 



Soup, udo, 84, 13. 



South Carolina — 



agricultural extension work, 1913, statistics, 83, 35-41. 



farmers' institute work, officials, statistics, 83, 5-6, 23-24, 25, 27-32. 

 South Dakota — 



agricultural extension work, 1913, statistics, 83, 35-41. 



farmers' institute work, officials, statistics, 83, 5-6, 24, 25, 27-32. 

 Southdown sheep — 



origin, development, distribution, value, 94, 13-16, 57. 



prizes at Chicago live stock shows, note, 94, 15. 



scale of points, 94, 16. 

 Spanish merino sheep, history, types, value, etc., 94, 6-10. 

 Sparrow, white-crowned, enemy of rose aphis, note, 90, 10. 

 Spiders, enemies of walnut plant lice, 100, 36. 

 Spikenard, description, 84, 6. 



Spondylocladium atrovirens, occurrence in potatoes, nature, etc., 81, 3-4. 

 Spongospora subterranea — 



cause of powdery scab in potatoes, 81, 5. 



See also Scab, powdery, of potatoes. 

 Spraying experiments, codling moth control, Pecos Valley, N. Mex., 88, 2-5. 

 Sprays, chemical, use in weed eradication in tobacco fields, 78, 23-24, 25-29. 

 Spruce, mining timbers, crushing and bending tests, 77, 5, 6, 21, 23, 25, 27. 

 Stickweed — 



control in tobacco fields, methods, 78, 16, 24, 28. 



other names, 78, 16. 

 Strait, Earl D., and Harry Thompson, bulletin on "Cost and methods of clearing 



land in the Lake States,' ' 91, 1-25. 

 Streeter, M. B., first importer of Suffolk down sheep, note, 94, 27. 

 Stump pullers, types, discussion, 91, 8-10. 

 Stumping cut-over land, methods, cost, etc., 91, 10-23. 

 Stumps — 



disposal in clearing land, methods and cost, 91, 23-24. 



Norway-pine, utilization by turpentine manufacturers, 91, 24. 

 Suffolk down sheep — 



origin, description, distribution, value, etc., 94, 26-28, 57. 



scale of points, 94, 28. 

 Sulphate, nicotine. See Nicotine sulphate. 



Sulphur, use in soil treatment for potato powdery scab control, 82, 13. 

 Surface, Henry E., bulletin on "Effects of varying certain cooking conditions in 



producing soda pulp from aspen," 80, 1-63. 

 Sussex sheep, progenitor of Soutbdown breed, description, 94, 13. 

 Sweden, agricultural extension work, notes, 83, 16-17. 

 Synchitrium endobioticum. See Wart disease. 

 Syrphid larvae, enemies of walnut plant lice, 100, 37-38. 



Tar, coal. See Coal tar. 



Tauss. experiments in extraction of solids and cellulose from wood, 80, 5, 6. 

 Teeswater sheep, progenitor of Wesleydale breed, note, 94, 49. 

 Telephones, adjunct to flume operations, value, etc., 87, 25. 



