594 



BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 Dana, J. D., cited on hornblende schist 

 layers in Manhattan series of schists.... 424 



— plication of hornblende schist of 



Manhattan island 478-479 



products of alteration of limestones.. 452 



p\-roxenite and hornblendite beds 



in limestones of ^'e\v York 447 



submarine vallevs otf the American 



coast .'. 209 



thickness of hornblende sheet on 



Manhattan island 468 



— , Investigations by, of schists of Manhat- 

 tan island. Mention of 423 



— , quoted on clastic dikes near Astoria 255 



Darton, N. H., cited on the Palisade 



trap 371 



Mauch Chunk series in West Vir- 

 ginia 56 



thickness of the Pocono formation 



in West Virginia 27 



— , Record of remarks by 532 



— , Report by, as Committee on Photographs 545 



— , Titles of papers b}' 531, 553 



Davis, W. M. ; Block mountains of the Ba- 

 sin Range province [abstract] 551 



— ; Blue ridge (The) of North Carolina [ab- 

 stract] 543 



— , cited on physiography of eastern Penn- 

 sylvania 282 



New Jersey 282 



— northern Penns3^1vania and 



southern New York 277 



— ; Fresh-water Tertiaries at Green river, 



Wyoming [abstract] 544 



— . Record of remarks b\\. 6. 8, 535, 547, 548, 553 

 Davis straits, Submerged channels in... 218,225 



Darwix, Charles, cited on clastic dikes 255 



Daubree, a., cited on chalcocite crystals... 271 

 Dawson, G. 31., cited on course of the Fraser 



river 126 



the Interior plateau of British Co- 

 lumbia 123 



origin of Shuswap series of schists... 470 



on structure of the Coast range, 



Alaska 128 



the Yukon plateau of Alaska 123 



— , quoted on the Coast range in Alaska 122 



— , Recognition by, of baselevel character of 



Interior plateau 131 



Death valley, Basin Range structure in.. 551-552 



, Lake sediments in 551-552 



De Gouvexain, C. a,, cited on copper glance 



crj'stals 271 



De Launay, L., Ed. Fuchs and, cited on cop- 

 per ores 269 



Delaware river, Basal conglomerate along... 519 



, Devonian section on 177 



channel, Submarine extension of.. 210-211 



213-214 



— vallev, Harrisburg peneplain remnants 



in...'. 284-286 



, Somerville peneplain remnants in 284 



Delesse, a., cited on mechanical rock 



analj'sis 460 



Dennis well, Bradford, Pennsylvania, Sala- 

 manca conglomerate in 529 



Development of the southeastern Missouri 



lowlands [abstract]; C. F. Marbut 10 



Devonian and Carboniferous rocks of south- 

 western New York ; L. C. Glenn 522-531 



— coral reefs, in Belgium, Occurrence and 



character of. 344 



— period. Later, in western Appalachian re- 



gion, Geological history of 86-89 



— rocks, Mud shales of, in New York, Penn- 



sylvania, and Ohio 182 



, Thickness of, Differences of, in differ- 

 ent sections 180-181 



, in Ohio 180 



, in Pennsylvania 180 



Page 

 Devonian rocks, Three types of sediments 

 in, in New York, Pennsylvania, and 

 Ohio, with associated faunas 181-182 



— sections. Comparative chart of..... 177, 179-180 

 Diabase dike. Light House point, Michigan, 



Studies of grain of 374-378 



— greenstone. Analyses of 457 



Diamond crater, Oregon, Character of. 549 



Dicttonema horizon, Discover}' of, in Rens- 

 selaer county, New York 537 



Dietrich, , cited, on coral reefs 345 



Dike, Diabase See Diabase dike. 



Dikes, Basic, Occurrence of, on Manhattan 



island 428 



— , Clastic, Paper on 227-268 



— , Sandstone. See Clastic dikes. 

 Dillee, J. S., cited on clastic dikes in Cali- 

 fornia 261-262 



— , elected on Auditing Committee 503 



— , quoted on clastic dikes in California 262 



DiNGESS, West Virginia, Section at 67 



D'Invilliers, E. v., cited on Ordovician 

 limestones near Bellelonte, Pennsjiva- 



nia 408, 410 



thickness of the Pocono formation 



in Pennsjivania 20-21 



DiORiTE gneiss, 3Ianhattan island, Micro- 

 scopic characters of 439-441 



, Specific gravity of 434 



DioRiTE schist, Manhattan island. Fracture 



and faulting in '. 431 



, Occurrence of 42 



, Plications in 430 



, Structure variations of. 429-432 



, Epidotic, 3Ianhattau island, Micro- 

 scopic character of 437 



, Specific gravity of 434 



DioRiTES, metamorphic. New Rochelle, New 



York, 31icroscopic features of 483 



Distribution of 3Iastodon remains in New 



York [abstract] ; John 31. Clarke 537 



DoEANS cove, Alabama, Carboniferous rocks 



at 75, 76 



Doll, J. Ch., cited on origin of meteorites... Ill 



— radial markings on meteorite from 



3Iocs 101 



Dolomite, Analyses of 4.o0 



— marble, Anah'sis of. 450 



Dolomites, Alumina and iron in, Amount of. 450 



— , Amphibolization of 449 



— , Products of alteration of 451-453 



D0L03IITIC limestone, Analyses of. 450 



Dominant species, Use of, in correlation 188 



Drake, N. H., cited on age of the Red beds 



in Texas , 198 



Drainage, Glacial, in central-western New 



York, Stages of 553 



Drasche, Richard von, cited on classifica- 

 tion of serpeutized tremolite 439 



Dresden, Saxon}--, Clastic dikes near 253-254 



Dunkard flora, 'Permian elements in, Ab- 

 stract of paper by David White on... 538-542 



— formation. Character of rocks of. 538 



, Fossil plants in. Characteristic Coal 



3Ieasure species .539-540, 541 



, Characteristic i>yas species of. 539 



old-world Permian species 



of 539 



, Number of species of 538 



, Occurrences and thickness of 538 



, Organic remains in. Character of. 538 



, Permian age of. Arguments for, from 



fossil plants 540 



Du NoYEK, G. v., cited on clastic dikes 257 



Dupont, E., cited on the Devonic limestones 



of Belgium 344 



Durham, England, Sand-pipes in magnesian 



limestones of. Occurrences and origin 



of 257 



Durocher, J., cited on chalcocite ^71 



