26 A PROTECTED STOCK RANGE IN ARIZONA. 



Page. 



Forage, yield, influence of distribution and quantity of moisture 20-21 



of inclosed area, 1903-1908 19-21 



Forest, Coronado National, fenced pastures 7-9 



fires. See Fires, forest. 



Golden-rod, rayless, danger of encroachment, remedies, etc 17-18 



weed enemy of grasses in arid regions 17-18 



Grama grasses. See Grasses, grama. 



Grass, galleta, large growth upon swales due to flood waters 9 



perennial, seedlings, production in fenced area ' 12 



Grasses, annual and perennial, growth, comparison 15 



inclosed area, increased growth 16-17 



small value as ground covering 9 



arid regions, most important 11-12 



seedling plants, economic importance, etc 11-12 



weed enemies 17-18 



desert, power of seed production 11 



grama, persistency, value, etc 10 



seed, production in private pastures in 1908 10 



growth, cause of increase 16-17 



influence of altitude 9-10 



large, caused by flood waters. 9 



native, seeding, experiments 14 



perennial, ascendancy over weedy annuals 16 



desert lands, influences controlling yield, etc 11-12 



disappearance, cause 15-16 



growth, conditions, etc 16 



in arroyos 17 



swales 17 



increase 16-17 



reproduction, experiments and results in Santa Rita Moun- 

 tains 11-12 



private pastures, comparison of growth for 1908 with previous years. . . 10 



reseeding, artificial, experiments ^ 12-14 



natural 11-12 



See also Grasses, seeding. 



root, disappearance, cause 15-16 



seeding, thin, arid regions, importance 11-12 



See also Grasses, reseeding. 



seedlings, production, yield, etc 11-12 



six weeks', increase of crop, 1908 10 



summer, irrigation studies 17 



Grazing, care in restocking arid land 13 



system, land capacity 13-14 



Ground, cover, accumulation, description, distribution, etc 9-10 



effect of moisture 9-10 



protection 9 



See also Herbage, dead. 



Gutierrezia, enemy of economic plants 18 



Hay, area, description 10 



Helvetia, Ariz., tributary region, production of grasses in 1908 10 



Herbage, dead, surface covering, accumulation, disposition, etc 9-10 



See also Ground, cover. 

 177 



