Nuts, pine, 103.
Oaks, California black, 128; gold-cup live-oak, 128.
Orchids, 23, 156.
Ousel, water, 29, 52, 238.
Owens River water, 246.
Parks, national, of the West, 12; Mt. Rainier, 30; Yellowstone, 37; Yomesite, 76; animals of, 172, 201; birds, 213; General Grant and Sequoia, 298, 328, 329; management of, 40, 351.
Petrified forests, 38, 60.
Phlox, 94.
Pika, 162, 201.
Pine, yellow, 13, 112, 115; contorted, lodge-pole, Murray, two leaved, tamarack, 15, 18, 67, 68, 83, 121, 122; mountain, 18, 108; Sabine, 102; hard cone (attenuata), 103; dwarf, 106; sugar, 100, 109; nut, 105; white, 68, 105.