INDEX. 



539 



Influence of porphyritic trachytes 243 

 luolepis 489 



Iron mines, review of 122 

 Irrigation, amount of water used in 320- 

 321 

 cost of 341 

 ditches 339 

 Island Mesa 167, 168, 179 



Park 372 

 Italy, amount of water used in irrrigation 



in 321 

 Jackson, W. H. 383, 386, 392, 397, 451, 453, 

 454, 475 

 report on the ancient ruins 

 examined in 1875 and 

 1877 411 

 Jemez, start from. May 7, 432 

 Jones, Capt. W. A. 468, 474 

 Juglandese 517 

 Juglans acuminata 517 

 alkalina 517 

 appressa 517 

 Californica 517 

 (Carya) picroides 517 

 ? Debeyana 494 

 denticulata 517 

 egregia 517 

 laurinea 517 

 Leconteana 517 

 nigella 517 

 Oregoniana 517 

 rhamnoides 517 

 rugosa 517 

 Saffbrdiana 517 

 Schimperi 517 

 thermalis 517 

 Woodiana 517 

 Junction Mountain 371 



Plateau 363 

 Jurassic 163, 165, 171, 173, 179 



formation, tables of 127 

 period 28 

 Jura, review of 108 

 Trias 178 



Trias, White River 72 

 White River 73 

 Kern, R. H. 442 



Lake Fork of the Gunnison, arable land 



on 335 

 profile of 337 

 Lakes, ancient 87 

 Lakes, Rev. Arthur 481, 483 

 Laramie Group 33, 77, 124, 174, 177, 181 

 La Plata Mountains 235 

 Lastrea (Goniopteris) Goldiana 497 

 intermedia 497 

 polypodioides 497 

 Late Mountains 192 

 Laurinese 491, 510 

 Laurus Brossiana 510 

 macrocarpa 491 

 Nebrascensis 491 

 octeoides 510 

 prsestans 510 

 primigenia 510 

 protesefolia 491 

 socialis 510 

 Utahensis 510 

 Lead mining, review of 121 

 LeguminosEB 495, 519 



Leguminosites ? arachiodes 519 

 cassioides 519 

 Marco nanus 495 

 pisiformis 519 

 LcmnacesB 501 

 Lemua scutata 501 



Lesquereux, Prof. Leo, identification of 

 fossils by 181, 

 182, 1^5 

 report of 481 

 Letter of transmittal of report of A. C. 

 Peale 161 

 report of A. D. 



Wilson 275 

 report of C. A. 



White 3 

 report of Geo. B. 

 Chittenden 349 

 report of G. R. 



Belcher 359 

 report of W. H. 



Jackson 409 

 report on arable 

 and pasture 

 lands of Colo- 

 rado, by Heniy 

 Gannett 311 

 Lichenes 496 

 Lieutenant Simpson 385,425,431,433,439, 



442 

 Lily's Park 371 

 Lionite, analyses of 146. 

 Liquidambar Californicum 507 

 Europseum 507 

 gracile 512 

 integrifolium 491,492 

 Liriodendron giganteum 494 

 intermedium 494 

 Meekii 493 

 primsevum 494 

 Little Book Cliffs 170, 173, 176, 181 



Thompson River, arable area of 325 

 Location of porphyritic trachytes 240 

 Loew, Dr. 471 



Prof. Oscar, 431, 433 

 Lomatia ? microphylla 509 



saportanea 491 

 Lone Cone 193, 194, 279 



Mountain 163, 165, 180 

 porphyritic trachyte of 238 

 LoniceresB 510 



Los Pinoa River, profile of 331 

 Lower carboniferous, tables of 129 

 Lozotajnia ro8aceana524 

 Lycopodiacese 498 

 Lycopodium prominens 498 

 Lygodium compactum 498 

 Dentoni 498 

 Marvitei 498 

 neuropteroides 498 

 trichomanoides 488 

 MagnoliacesB 513 

 Magnolia alternans 493 

 attenuata 513 

 Californica 513 

 Capellini 493 

 cordifolia 513 

 Hilgardiana 513 

 luglcfieldi 513 

 lanceolata 513 



