542 



INDEX. 



Populites cyclophylla ? 493 

 elegaus 490 

 Lancastriensis 493 

 Populus acerifolia 507 

 arctica 507 

 balsamoides 506 



cordata 507 \ 



? cordifolia 490, 506 

 cuneata 507 

 cyclophylla 490 

 ? Debeyana 495 

 decipiens 507 

 elliptica 490 

 elongata 507 

 flabellum 507 

 genetrix 507 

 glanduliferao06 

 heliadum 507 

 laevigata 507 

 latior 506 

 leucophylla 506 

 litigosa 490 

 melanaria 506 

 melanarioides 507 

 microphylla 490 

 monodon 507 

 mutabilis 507 

 nervosa 507 

 rhomboidea 507 

 Eichardsoni 507 

 subrotundata 507 

 treiniiloides, a remedy among In- 

 dians 471 

 Ungeri 507 

 Zaddachi 507 

 Porpbyritic trachyte 232 

 age of 245 



of Bear Eiver Mountains 238 

 correlation of 244 

 Dolores Peak 238 

 Huerfano Region 235 

 influence of 243 

 La Plata Mountains 235 

 location of 240 

 Lone Cove 238 

 Middle Park 232 

 Mount Richard Owen 232 

 Mount Wilson Group 237 

 physical appearance of 241 

 relations of 242 

 review of 112 

 Sierra Abajo 239 

 Sierra Carriso 240 

 Sierra El Late 237 

 Sierra La Sal 239 

 Sr^anish Peaks 233 

 San Miguel Group 237 

 structure of 241 

 symmorphic rocks of 243 

 Porphyry 209 



Post-Cretaceous formation, review of 109 

 tables of 124 

 strata in Grand River Dis- 

 trict 131 

 Postal's Rancha 475 

 Potamese 501 



Potsdam Group, tables of 130 

 Pottery 403, 449 



abundance of fragments of 478 

 corrugated variety 404 



Pottery, forms of 405, 406 



fragments of 454,476 

 great quantity of 403, 449 

 ignorance of manufacture of 477 

 Indian 474 



manufacture of 404, 405 

 ornamental designs on 403, 405, 



449, 450 

 painted variety 406, 449, 450 

 surface finish of 404 

 Powell's Park 366 

 Primary triangulation 279 

 Prinos integrifolia 516 

 Probable errors of triangulation 282 

 Promontory Plateau 371 

 Proper season for gauging streams 321, 



322 

 Prostitution, punishment for 464 

 Proteacese 491 

 ProteesB 509 

 Proteinese 509 

 Proteoides acuta 491 



daphnogenoides 491 

 grevilleseformis 491 

 Protoginyte 212 



Protophyllum crednerioides 495 

 Haydenii 495 

 Leconteanum 495 

 minus 495 

 ?Mudgei 495 

 multinerve 495 

 ? Nebrascense 495 

 quadratum 495 

 ragosum 495 

 Sternbergii 495 

 Prozoic formations, review of 103 

 Prunus Caroliniana519 



? cretacea 495 

 Ptenostrobus Nebrascensis 496 

 Pteris affinis 498 



erosa 483, 497 

 Gardeneri 498 

 pennseformis 497 

 pseudo pennseformis 497 

 Sitkensis 497 

 subsimplex 497 

 Pterocarya Americana 518 

 Pterophyllum ? Haydenii 488 

 Publications on Colorado minerals 158 

 Pueblo Alto 446 



Bonitos 439 

 Chettro Kettle 438 

 del Arroyo 443 

 Hungo Pavie 438 

 Penasca Blanca 445 

 Pintado, description of 433 



probable number of in- 

 habitants 436 

 Pueblo Una Vida 437 



Wije gi 437 

 Pueblos 476 



Nos. 8 and 9 444 

 Puerco marls, White River 79 

 Purgatoire River, arable area of 327 

 Pyrite in volcanics 228 

 Pyrus cretacea 495 

 Quebec group, tables of 130 

 Quercus acrodon 505 



angustiloba 506 

 antiqua 490 



