4IO 



INDEX 



son plants, 242, 244; affected by dis- 

 tance from watering place, (fig.) 

 297; for study in grazing course, 



365, 374- 



Oxylropis, poisonous to livestock, 243; 

 description, 250; for study in graz- 

 ing course, 370. 



Oxylropis Lambcrlii, description, 250; 

 habit of growth, (fig. frontis.); dis- 

 tribution and habitat, 250, (fig.) 

 251. 



P 



Pacific slope, pasture lands, for study 

 in grazing course, 365. 



Palatability, of mature forage, 75; 

 studies of, in Blue Mountains of 

 Oregon, 76; factor in good pasture, 

 87; affected by frosts, etc., 88; of 

 primitive plant forms, 106; height 

 growth in relation to, on fenced 

 and on unfenced areas, 126; of Ber- 

 mudagrass, 137; of tall oatgrass, 

 146; of white clover, 153; of bur 

 clover, 156; of poisonous plants, 243; 

 to be considered in study of pasture 

 revegetation, 339, 340; percentage 

 of, on protection plots, 356; for 

 study in grazing course, 373. 



Panhandle, of Te.xas, use of wells in, 

 304- 



Panicularia, for study in grazing 

 course, 368. 



Pantograph, for mapping chart plots, 

 (fig.) 345; disadvantage of, 346; 

 advantages of, 346. 



Papilionaceae, older name for Faba- 

 ceac, 151. 



Papilionoidcac, subfamily name, 151. 



Parasites, in sheep manure, 100. 



Parsley, spotted, name for water hem- 

 lock, 264. 



Parsley family, for study in grazing 

 course, 369. 



Parsnip, name for water hemlock, 264. 



Parsnip family, includes poisonous 

 species, 243. 



Partridge-peas, belonging to legumes, 

 151- 



Pasture, extent of lands used for, 4; 

 benefits of leasing system on, 33; 

 revegetation, 66; improvement, 86; 

 what is good, 87; kinds of, 88; rea- 

 sons for deterioration of, 88; "blan- 

 ket" recommendations for grazing, 

 92; experiments on bluegrass, in 

 Virginia, 93; nonsod, 96; farm, in 

 good condition, (fig.) 96; fertility 

 of, maintained by fattening animals, 

 100; invasion of, by asters, (fig.) 



loi; depiction of, 104; vegetation on 

 eroded and on noneroded, (fig.) 118; 

 how to recognize depletion or im- 

 provement of, 127; mixtures for 

 temporary and for permanent, 148; 

 points to be considered in study of 

 revegetation, 339; importance of 

 pasture li\'estock production, 360; 

 improved handling of, to be studied 

 in grazing course, 364; woodland, for 

 study in grazing course, 364; classifi- 

 cation of lands, for study in grazing 

 course, 365 ; plants, native, for study 

 in grazing course, 366; plants, broad- 

 leaved, for study in grazing course, 

 369; farm, study of, in grazing 

 course, 373; factors that determine 

 value, 373. 



Pasture management, field for research 

 work, 93; bluegrass pastures, 93; 

 nonsod pastures, 96; weed control, 

 100; destructive practice, 117; annual 

 burning, no place in, 225; application 

 of grazing reconnaissance data to, 

 323; suggestions for instruction in, 

 360; schedule of subjects for study- 

 ing, 361; for study in grazing course, 

 '364, 371; of sod and nonsod lands, 

 for study in grazing course, 373; 

 general instruction in, 390. 



Pathology, plant, auxiliary subject in 

 study of pasture management, 361. 



Payette National Forest, study of 

 effects of grazing on timber repro- 

 duction on, 200. 



Pea, blue, name for lupine, 266. 



Pea, common garden, belonging to 

 legumes, 151. 



Pea family, nongrasslike forage plants, 

 151; includes poisonous species, 



243- 



Pearson, G. A., reseeding experiments, 

 41; study of grazing damage to 

 yellow pine reproduction, 204. 



Peas, winter annual of Southwest, 8. 



Peas, Canadian field, growth on erod- 

 ed and on noneroded soil, 184, (fig.) 

 185; relative water requirements, 

 (fig.) 186; summary of study, (fig.) 

 188. 



Peavine, study of, in grazing course, 

 369. 



Peavine, low, in destruction of fox- 

 glove-sweet sage-yarrow cover, 114; 

 on range grazed annually, (fig.) 

 122; on protected plot, (fig.) 123; 

 on protected plot and on unprotect- 

 ed range, 125; indicator plant, 129. 



Pedicularis, growth after burning brush- 

 land, 226. 



