PETROLOGY — PIERCE 147 



Page 



Petrology of Green Mountain conglomerate 4, 147 



Laurentian and Huronian rocks 4, 319-326 



the Laurentian and Ottawa districts 4, 349 



Lower California 5, 502, 503, 510, 511 



Maryland granites 4, 305 



Pettee, W. H., Amendment to by-laws proposed by 3, 470 



— cited on auriferous gravels 4, 259, 271, 280 



geology of California 3, 435 



Neocene channels 4, 268, 272-274, 277, 279, 281 



— , Elevations taken from observations of. 4, 263 



— quoted on auriferous gravels 4, 278 



Petzholdt, a., cited on dolomites 6, 189 



Ph.ethonides spinosus, Description of. 2, 42 



Phases in the metamorphism of the schists of southern Berkshire ; W. H. 



Hobbs 4, 167 



Phenomena of beach and dune sands ; N. S. Shaler 5, 207 



Philippson, a., cited on denudation 7, 385 



Phillips, A., cited on deposition of gold and pyrite 6, 238 



segregated veins ' 6, 226, 227 



Phillips, J., cited on cleavage 4, 77 



Phillips, John, Acknowledgments to 1, 482 



— cited on Carboniferous rocks 2, 17 



Phillipsia (?) consors, Description of. 2, 43 



— meramecensis, Description of 2, 43 



Phinney, a. J. , Acknowledgments to 3, 193 



Pholadomy'a, New species of 3, 402^ 405 



Pholidophorus americanus, Description of 10, 398 



PnosPHATii: deposits of the island of Navassa ; E. V. D'Invilliers 2, 75. 



— , The Redonda 2, 6 



Photograph Committee, Reports of 2, 615 ; 3, 470 ; 4, 415 ; 5, 554 ; 6, 445 ; 



7, 494 ; 8, 380 ; 9, 418 ; 10, 463 



Photographs, Appointment of Committee on 2,2 



Phthanites of the Pacific Coast ranges . . •. 6, 83 



Physiographic basis. Cartography on a 2, 541 



— conditions in the Ottawa basin 9, 222 



— geology of Arkansas 2, 225 



Physiography and geology of region adjacent to Nicaragua Canal route; 



C. W. Hayes 10, 285 



— , Bearing of, on uniformitarianism 7,8 



— of the eastern Adirondacks in the Cambrian and Ordovician periods ; 



J. F. Kemp 8, 408 



PicTET, F. J. , cited on Paleozoic corals 3, 256 



Piedmont plateau. Configuration of 2, 558 



, Crystalline rocks of. 2, 223 



, Structure of 2, 301 



Pierce, G. W. , Acknowledgment to 7, 425 



— cited on Genesee Valley levels 7, 434, 435 



Pierce. James, cited on Coastal Plain deposits 8, 319 



