INDEX 



417 



Southwest, the, 5; location, 8; veg- 

 etation, 8; pasture lands, for study 

 in grazing course, 365; investiga- 

 tions in, for study in grazing course, 

 376- 



Soybean, cultivated pasture plant, 

 151; habitat, 159; habit of growth, 

 159, (fig.) 160; value, 159. 



Sparhawk, W. N., studies on Payette 

 National Forest, 200. 



Specimens, collection of, for study in 

 grazing course, 370. 



Spessart Mountains, forest privileges, 



Sporoholus, for study in grazing course, 

 368. 



Spotted parsley, name for water hem- 

 lock, 264. 



Spraying, to eradicate larkspur, 260. 



Springs, distinguished from seeps, 298; 

 improving and protecting, 298, (fig.) 

 299. 



Spruce, for troughs, 300. 



Spruce-fir, type of summer range, 

 study of soil in, 183; young cow 

 poisoned by larkspur in spruce-fir 

 type, (fig.) 246; natural-type unit, 

 study of, in grazing course, 385. 



Squirrel food, name for death camas, 

 261. 



Squirrels, ground, study of, in grazing 

 course, 377. 



Stadia, used in field work, 319, 320. 



Staggerbush, poisonous species of "lau- 

 rel," 274. 



Staking, of chart plot, 353; plan for 

 permanent sample plots, (fig.) 353. 



State and private lands, leasing of, 30; 

 in Texas, 30; in Wyoming, 31; Nor- 

 thern Pacific Railroad Company, 31. 



Steers, feeding grain ration to, 96. 



Stipa, mechanically injurious, 286; 

 for study in grazing course, 368. 



Slipa comala, injurious to stock, 288; 

 description, 288. 



Slipa minor, in mixed grass and weed 

 stage, 1 08 ; on eroded and on noneroded 

 pasture (fig.) 118; on range grazed 

 annually (fig.) 122; on protected 

 plot (fig.) 123; indicator plant, 129. 



Slipa spartea, injurious species, 288; 

 description, 288. 



Stock, number to graze on nonsod 

 pasture, 96; driving and herding, 

 247; factors determining number 

 and distribution, 311. 



Stock trails, sign of overgrazing, 106; 

 indicator plants on, 128; injury by 

 sheep grazing confined to, 199; 

 factor in fire control, 234. 



Stocker cattle, grazing on nonsod 

 pasture, 97. 



Stocking, factors affecting, study of, 

 in grazing course, 365. 



Strip plots, transects and bisects, 351. 



Stripper, comb seed, for collecting 

 seed, (fig.) 56, 57. 



Strychnine, for loco poisoning, 254; 

 for larkspur poisoning, 258. ^ 



Strychnine sulphate, for larkspur poi- 

 soning, 258. 



Sudangrass, for hay and pasture com- 

 bined, 132; habit of growth, 144, 

 (fig.) 145; seeding, 145; value for 

 hay, 145. 



Sugar pine, damage to, by grazing, 199. 



Sundial, name for lupine, 266. 



Sunilower family, for study in grazing 

 course, 369. 



Supplemental feed, provided under 

 leasing system, 34; to be consid- 

 ered in pasture inspection, 335; study 

 of, in grazing course, 387. 



Surface fire, 233. 



Swales, developing water supply of, 299. 



Swamps, developing water supply of, 

 299. 



Sweden, home of Alsike clover, 152. 



Symphoricarpos, sign of overgrazing, 

 106. 



Symptoms, of loco poisoning, 252; 

 of larkspur poisoning, 257; of death 

 camas poisoning, 263; of water 

 hemlock poisoning, 265; of lupine 

 poisoning, 268; summary of, 269; of 

 "laurel" poisoning, 275; of sneeze- 

 weed poisoning, 278; of ergot poison- 

 ing, 281; of ily agaric poisoning, 283; 

 of death cup poisoning, 284; of 

 mechanical injury by grasses, 286, 

 288; for study in grazing course, 370. 



Syringe, Quitman, for hypodermic in- 

 jections, 258. 



Tapes, boundary, for charting plots, 

 343; sample plot steel guide, (fig.) 

 345; quadrat, one meter in length, 

 on denuded plots, 349; special, for 

 mapping transects and bisects, 351; 

 special sample-plot guide, 351, (fig.) 

 352. 



Tar weed, in first or early weed stage, 

 (fig.) 116; indicator plant, 128. 



Taxonomy, auxiliary subject in study 

 of pasture management, 361. 



Temperature, factor in forage growth, 

 5; study of, included in course in 

 meteorology, 363. 



