Pike, Zebulon Montgomery, 178; his Mississippi expedition, 178, 179; returns to St. Louis from the north, 180; goes west, 180; escorts natives to their home, 181; watched by Spaniards, 181; comes to trail left by Malgares, 183; and the Pawnee war party, 185; sees the Rocky Mountains, 185; lack of foresight, 186; reaches foot of Rocky Mountains, 186; his Grand Peak, 186; sufferings of his men, 186; his wanderings, 188; builds fort on Rio Conejos, 189; trapped by the Spaniards, 190; discovers he is not on Red River, 190; meets La Lande, 191; before Governor Allencaster, 191; treatment at Santa Fé, 192; meets Pursley (Purcell), 192; taken to General Salcedo, 192; sent back to the United States, 192; his opinion of the Plains region, 221; pessimistic on the value of the Wilderness, 304 Pike's Peak, Long sees it, 224; James first man to climb to its summit, 225 Pilot Knobs, name Hunt gave the Three Tetons, 208 Pima ruins called Casa Grande, 120 Piman stock, range of, 66 Pineda, discovers the mouth of the Mississippi, 104 Piñon tree, and nut, 10 Pitahaya, 10 Plains, extent of, 5; character of, 5; rivers of, 6 Platte River, 6 Plum Creek massacre, 330 Plymouth Rock, 132 Poala, one of the Tiguex villages, 114 Point George, 200 Polk, on Rio Grande boundary, 300 Ponce de Leon, 103 Pone, cornbread, 79 Population, 99; estimate of Amerindian, 95 Porcupine Bear's protest against whiskey, 94 Portneuf River, 281; Wyeth builds his Fort Hall there, 283 Potts, trapper, 194 Powell, John Wesley, Major, the only explorer who went where modern Amerinds did not go, 90; conceives the idea of exploring the canyons of the Colorado, 320; expedition, 320; loses a boat in Lodore, 322; has a difference with the wrecked men, 322; three of his men leave the canyon and are killed, 324; emerges from the Grand Canyon, 324; leaves the Colorado, 325; helped by Brigham Young, 325; thought to be dead, 325; at St. George tries to get his mail, 325 Powell, Walter, 325 Prairie buffalo, 38 Prairies, extent of, 5 Presidio of Tubac, 124 Presidios, 122 Presbyterians in Oregon, 308 Promontory Point, Utah, 336 Provost, Etienne, famous trapper, 233; in Brown's Park, 1825, 240 Pueblo, Pike at site of, 185; Pike's structure near, 225; first house built there by Americans, 235 Pueblo, villages, character of, for defence, 76; storerooms, 80 Puebloan, explanation of term, 66; Navajos mixed with, 66; location of, 66; provision against famine, 80; rebellion of, 117