AMERICAN GEOLOGY INDEX. 



729 



Page. 



Owen, Richard, views on value of fossils 507 



work in Arkansas 482 



on survey of Indiana . 507 



Ozark Mountains, carboniferous rocks 247 



Pacific Railroad surveys 449-456 



J. L. Le Conte's 



work 531 



Packard, A. S., entomologist, Maine survey. 511 



Paleozoic deposits, parallelism of, by Hall. 419 



strata, classification of 490-492 



Pallas, referred to 207 



Paradoxides, finding of 464 



Parallelism of Paleozoic deposits 419 



Parry C. C, geologist, Mexican boundary 



survey 460 



Peale, Albert C, geologist, Hayden sur- 

 vey 598,603 



inverted beds of Jackass 



Creek 597-599 



mineralogist, Hayden 



survey 595 



sketch of 708 



views mi lignitic group. 654 



with Hayden surveys.. 593, 



596, 600 



Peale, Rembrandt, on bones of mammoth. . 213 



Pebbles, distortion of, in conglomerate 315 



elongation of 510 



Pennsylvania, appointmentof H.D. Rogers, 



State geologist 344 



final reports on geology of. . 489 



geological survey of 344 



organization of Geological 



Society 320 



aeci >nd geological survey of. 581 

 Percival, James G., geological survey of 



Connecticut 329 



on origin of iron ores. 442 



sketch of 329,708 



work in Wisconsin . . . 442 



Permian fossils 485 



Perry, John B., sketch of 70S 



views on Eozoonal struc- 

 ture 643 



Richmond bowl- 

 der train 405 



Taconic 668 



Peter, Robert, analyses of soils 183 



assistant to D. D. Owen 443 



chemist, survey of Ken- 

 tucky 565 



sketch of 708 



Petite Anse, geological work of E. \V. Hil- 



gard 561 



origin of 504 



Petroleum in California, viewsof J. I). Whit- 

 ney 515 



origin of, in Ohio, views of J. S. 



Newberry 542 



springs, early discovery of 331 



Philadelphia, geology of environs 283 



Phillips, E. , assistant to Owen 353 



Physical geology of United States, by W. W. 



Mather 394 



Pilot Knob, eruptive nature of, by S. B. 



Buckley 510 



Page 



Piatt, W. B., naturalist, Hayden survey 596 



Pope's expedition of 1855 444 



Porphyries of Missouri, origin of 556 



Potsdam sandstone, origin of 468, 553, 571 



Potter, William B., assistant, survey of 



Ohio 541 



geologist, survey of 



Missouri 555 



sketch of 709 



Powell, John W., exploration of the Grand 



Canyon 566 



geological and geograph- 

 ical surveys 619 



sketch of 709 



work in Uinta Mountains. 619 



Powell, W. Byrd, work in Fourche Cove... 373 



Prairies, origin of 497 



Pratton, Henry, assistant to Owen 413 



Presque Isle, section of 243 



Prime, Frederick, assistant, survey of 



Pennsylvania 582 



sketch of 709 



Proctor, J. R., assistant, survey of Kentucky. 565 

 Prout, H. A., description of Bad Lands fos- 

 sils 413 



Pumpelly, Raphael, on origin of copper... 538 

 origin of porphyries 



and iron ore 556 



sketch of 709 



survey of Missouri 555 



work in China 522 



Michigan .. 536,538 



Rafinesque, annals of Kentucky 271 



Rapp, Frederick, views on human foot- 

 prints in stone 263 



Rathbun, Richard, with Hartt in Brazil ... 530 

 Raynolds, W. F., expedition to the Yellow- 

 stone River 589 



Read, M. C, assistant, survey of Ohio 541 



Redfield, William C, sketch of 709 



Red River of Louisiana, exploration of, by 



Marcy 434 



Red sandstone, fossils in 249 



Rensselaer County, N. Y., Eaton's survey of . 254 



Rhode Island, survey of, under Jackson . . . 347 

 Richardson, James, assistant, survey of 



Canada 517, 549 



Richmond bowlder train, origin of. . . 393, 402, 405 



Richthof en's classification of volcanic rocks 622 



Riddell, J. L., on geology of Texas 355 



Riddell, W. P., assistant, survey of Texas.. 488 



Ridgeway, T. S 341 



Ridgway, Robert, ornithologist, fortieth 



parallel survey 609 



Rivers, cutting power of 310 



Rock classification, by J. F. and S. L. Dana. . 229 



E.Emmons 431 



Edward Hitchcock 311-312 

 (volcanic), by Rieht- 



hofen 622 



Rock decay, views of J. Van Rensselaer 279 



Rock weathering 284 



and erosion 435 



Rocks, age of, by Lardner Vanuxem 291 



Rocky Mountains, Long's expedition to 245 



Roemer, Ferdinand, work in Texas 487 



