420 



INDEX 



243; poison in roots, 244; method 

 of eradicating, 247; description, 

 264, (fig. frontis.); distribution and 

 habitat, 264; losses from, 265; 

 poisonous parts, 265; s>Tnptoms of 

 poisoning, 265; remedies, 266; sum- 

 mary of symptoms and remedies, 

 270. 



Watering places, distance between, 

 factor in stocking, 6; factor in fire 

 control, 234; control over, 295; 

 distribution of, 296; overgrazing 

 and trampHng near, (fig.) 297; 

 natural, 298; artificial, 302; factor 

 in determining number and distri- 

 bution of stock, 311; study of, in 

 grazing course, 375. 



Watersheds, creation of National For- 

 ests to protect and improve, 18, 27; 

 injury to, by grazing, 105, 197; of Na- 

 tional Forests, 172; value of vegeta- 

 tive cover on watersheds contrib- 

 uting to Ohio River, 174; protec- 

 tion of, factor in determining adap- 

 tability of range to stock, 311; 

 study of, in grazing course, 378. 



"Weed, grazing type, 312, (fig.) 314. 



Weeds, annual growth in United 

 States, 100; invasion of farm pas- 

 ture by asters, (fig.) loi; control 

 of, loi; indicators of overgrazing, 

 107; noxious, for study in grazing 

 course, 371; control of, for study 

 in grazing course, 374. 



Wells, essential features, 304; in Pan- 

 handle of Texas, 304. 



Wheat, Kubanka, growth on eroded 

 and on noneroded soil, 184; relative 

 water requirements, (fig.) 186; sum- 

 mary of study, (fig.) 188. 



Wheatgrass, scattering and planting 

 of seed, 67; in climax herbaceous 

 cover, 108; height growth and root 

 system, (fig.) log; in mixed grass 

 and weed stage, in; in competition 

 with yellowbrush, (fig.) 112; for 

 study in grazing course, 367. 



Wheatgrass, blue bunch, height and 

 root system, (fig.) 109; indicator 

 plant, 130. 



Wheatgrass cover, climax herbaceous 

 stage, 107; destruction of, 108; 

 value as forage, in. 



Wheatgrass, Scribner's, indicator plant, 

 129. 



Wheatgrpss, slender, in reseeding tests, 

 43; amount to sow and cost, 53; 

 in arid regions, 89; on eroded and 

 on noneroded pasture, (fig.) 118; 

 on range grazed annually, (fig.) 122; 



on protected piot, (fig.) 123; on pro- 

 tected plot and on unprotected range, 

 125; indicator plant, 130. 



\\'heatgrass, small, height and root 

 system, (fig.) 109; competition with 

 yellowbrush, (fig.) 112; indicator 

 plant, 130; open grassland com- 

 posed of, (fig.) 313. 



Wheatgrass, violet, collecting seed of, 

 57; effect of cropping, (figs.) 65; 

 indicator plant, 130. 



White fir, damage to, by grazing, 199. 



Wild cat, study of, in grazing course, 

 383. 



Willow, sign of overgrazing, 106; 

 effect of fire on, 226. 



Willow family, for study in grazing 

 course, 369. 



Wind, factor in erosion, 177, 181; 

 erosion due to overgrazing, (fig.) 

 183. 



Windmill, water provided by use of, 

 78; for wells, 304. 



Wiregrass, withstands fire, 224, 237. 



Wolf, study of, in grazing course, 383. 



Woodland, grazing on, 197; grazing 

 farm, 208; grazing t>'pe, (fig.) 316, 

 317; pasture, for study in grazing 

 course, 364, 376. 



Wooton, E. O., tests in seeding native 

 forage plants, 40. 



Worms, stomach, in sheep manure, 

 100. 



Wyoming, cattle and sheep grazed 

 under permit, 21; leasing system, 

 31; leasing system, for study in 

 grazing course, 366. 



Xylorrhiza Parryi, poisonous to stock, 

 275, (fig.) 277. 



Yarrow, in second or late weed stage, 

 113; habit of growth, (fig.) 114; 

 on eroded and on noneroded pas- 

 ture, (fig.) 118; on range grazed 

 annually, (fig.) 122; on protected 

 plot, (fig.) 123; on protected plot 

 and on unprotected range, 125; in- 

 dicator plant, 129, 130; in weed 

 type, (fig.) 314- 



Yellowbrush, in destruction of wheat- 

 grass cover, 108; in mixed grass 

 and weed stage, (fig.) no, in; in 

 competition with wheatgrass, (fig.) 

 112; indicator plant, 129. 



Yellow pine, tjpe of National Forest, 



