544 



INDEX. 



Eio Mancos, canon of 391 

 profile of 332 

 Puerco 432 

 San Juan 190, 412 

 San Miguel 193 

 Torrejon 432 

 Elver, Colorado 471 



Group 218 

 Eoan Creek 164, 174, 181 



or Book Cliflfe 1(54, 170, 173, 176, 183 

 or Book Plateau 173, 176, 352 

 Eoaring Fork, arable area of 333 



profile of 336 

 Eobinson, C. T. 523 

 Eock-cuttings made Uy Indians 475 

 Eock inscriptions 401 

 Eock shelters 413-417, 427, 429 

 Eoscolite, analysis of 150 

 Eosacese 519 

 Eoseflorse 519 

 EosefloresB 495 

 Euins, Arizona 454 

 Euins at Abiquiu, New Mex. 401 

 Aztec Springs 399 

 Ojo Caliente 401 

 Surouara 401 

 classification of 384 

 in Southwestern Colorado 383 

 New Mexico 453 



of a great cave town on the Eio 

 De Chelly 421 

 dwellings 475 

 Epsom Creek 425 

 Montezuma Canon 427 

 Southwestern Colorado and ad- 

 jacent territory 411 

 the Chaco Canon 431 



Hovenweep and McElmo 413 

 Pueblo Alto 446 



Bonito 459 

 Cheltro Kettle 438 

 Del Arroyo 443 

 Hungo Pavie 438 

 Penasca Blanca 445 

 Pintado 433 

 Una Vida 437 

 Weje-gi 437 

 Pueblos Nos. 8 and 9 444 

 Eio de Chelly 420, 421 

 Eio San Juan 38- , 415 

 tower on Epsom Creek 425 

 tower 391, 415, 425 

 on the Eio Animas 401 

 Dolores 400 

 La Plata 387 

 Mancos 391 

 McElmo 398, 413 

 Sabal Campbelli502 



Gray an a 502 

 Sabalites Californicus 502 

 Campbelli 502 

 fructifer 502 

 Grayanus 502 

 Sage Plain 163, 166 



Plateau 363 

 Sagittaria pulchella 501 

 Saint Charles Eivcr, arable area of 328 

 Saint Vrain's Creek, arable area of 325 

 Salicinese 506 

 Salisburia binervata 500 



Salisburia polymorpha 500 

 Salix angusta 506 



californica 506 

 cuneata 490 

 fdensinervis 506 

 elliptica 506 

 elongata 506 

 flexuosa 490 

 Integra 506 

 Islaudica 506 

 Lavateri 506 

 macrophylla 506 

 media 500 

 Meekii 490 

 membranacea 490 

 nervillosa 490 

 protesefolia 490 

 tabellaris 506 

 varians 506 

 Worthenii, 506 

 Salt Creek 170 

 Salvinia Alleni 498 



attenuata 498 

 cyclophylla 498 

 Sanborn, F. G. 521 

 San Juan mines, review of 120 

 Mountains 190 



Eiver, arable area of 330-332 

 grazing lands of 346 

 profile of 331 

 San Luis Creek, arable area of 329 



Valley, arable areas of 328-330 

 as a grazing area 345 

 basalt of 240 

 San Miguel Group 257 



Mountains 193 

 Plateau 163, 165, 169 

 Eiver 163, 165, 179 

 Eiver, arable laud on 335 

 Sapindacese 515 

 Sapindus affinis 515 



Americanos 515 

 angustifolius 515 

 caudatus 515 

 coriaceurt 515 

 Dentoni 515 

 membranaceus 515 

 obtusifolius 515 

 stellarisefolius 515 

 undulatus 515 

 Sapotacites Americanus 511 



Haydenii 492, 511 

 Sassafras acutilobum 492 



(Arailiopsis) cretaceum 492 



cretaceum obtu- 



sum 492 

 mirabile 492 

 obtusus 493 

 recurvata 492 

 cretaceum 481, 492 

 Mudgei 492 

 Saucer Valley 163, 165, 167 

 SaxifragesB 513 

 Scattered drift 55 

 Schirmerite, analyses of 151 

 Scitaminese 501 

 Sclerotium rubellum 496 

 Scudder, Samuel H. 481,486 

 Sections 171, 172, 174, 179, 180, 181, 184, 185 

 Sedimentary rocks and orography 93 



