910 
INDEX. 
Page 
Dawson,  J.  William,  on  Murray  Bay 530, 549 
on  Nova  Scotia 504, 509, 523 
Dayton,  rocks  near 425 
Dayton  quadrangle,  rocks  of 846 
Deadmans  Island,  rocks  of 533 
Dead  wood  Creek,  rocks  on 732 
Deadwood  formation,  rocks  of 839 
Dease  River,  rocks  near 527, 529 
Deception  Lake,  rocks  near 293 
Deep  Creek,  rocks  on 866 
Deer  Lake,  rocks  at. 137 
Deerwood,  rocks  near 338 
Defile  Creek,  rocks  on 800 
Delaware,  pre-Cambrian  rocks  of 676-677 
Delaware  River,  rocks  on 658, 662 
De  Lury,  J.  S.,  on  Montreal  River 435, 447 
Dennis,  Theo.,  and  Ingalls,  E.  D.,  o:i  Bruce 
mines  district 431, 446 
Denver  Basin,  rocks  at 806 
DeRance,  C.  E.,  and  Fielden,  II.  W.,  on  Arctic 
Canada 531, 549 
Derby,  rocks  at 565 
Deschenes  Lake,  rocks  near 466 
Desmoronado,  rocks  of 763 
De  Verneuil, ,  and  Murchison,  R.,  term 
Azoic  used  by 116 
Devils  Canyon  Mountains,  rocks  of 742 
Devils  Track  River,  rocks  on 198 
Devonian  rocks,  discrimination  of 77-78 
granite  formation  in 77-78 
Dewey,  Chester,  on  western  Massachusetts 
geology 568, 594 
on  Williamstown  geology 567-568, 594 
Diablo  Mountains,  rocks  in 45 
Dicellocephalus  horizon,  correlation  of 318 
Diller,  J.  S.,  on  California  rocks 873-874 
work  of 14 
D'Invilliers,  E.  V.,  on  South  Mountain  belt.  658, 712 
Dioritic  group,  description  of 130-131, 133, 134 
Disappointment  Lake,  rocks  of 232, 237 
Dodge,  W.  W.,  on  Massachusetts  geology 572- 
573,595 
Doe  River,  rocks  on 693 
Dog  Lake,  rocks  of 271 
Dolores,  rocks  near 768 
Dolores  River,  rocks  on 819 
Donderberg,  rocks  at 626 
Doobaunt  Lake,  rocks  on 540 
Doobaunt  River,  rocks  on 539, 547 
Dore  conglomerate,  character  and  distribu- 
tion of 291, 341 
correlation  of 295,328-329,357 
relations  of 356 
Dore  River,  iron  near 286 
rocks  near 257,258,266,285,290,411 
Douglas  Houghton  ravine,  rocks  on 129, 
136,149,161,305 
Dowling,  D.  B.,  on  Hudson  Bay 541-542,551 
on  Keewatin  district 536-537, 550 
Dowling,  D.  B.,  and  Tyrrell,  J.  B.,  on  Atha- 
baska-Churchill  River  region 538- 
539,544,550,551 
on  Lake  Winnipeg  region..  540-541,544,550,551 
on  Saskatchewan  district 544,551 
Dresser,  J.  A.,  on  Eastern  Townships 488,489 
on  Quebec 
Page. 
Dresser,  J.  A.,  work  of 15 
Drowning  River,  rocks  on 545 
Drumlummon  porphyry,  character  and  dis- 
tribution of 863 
Dryden,  rocks  near 291 
Dry  Fork  Ridge,  rocks  on 839 
Ducatel,  J.  T.,  on  Maryland  rocks 664 
Ducatel,   J.  T.,  and  Alexander,   J.   II.,  on 
Maryland  rocks 664, 712 
Ducktown,  rocks  at 686 
Duluth,  rocks  at 198,240 
Duluth  gabbro,  character  and  distribution 
of 249,305 
Dumble,  E .  T.,  on  Sonora  rocks 762 
Duparc,  Louis,  on  Keweenaw  Point  copper 
rocks 169, 380 
Durham  Creek,  rocks  at 654 
Durham  Hills,  rocks  of 659 
Eagle  Lake,  rocks  of 875 
Eagle  River,  rocks  on 125,807,815,818 
Eames,  H.  II.,  on  geology  of  Minnesota.. .  196,393 
Eastern  sandstone,  age  of 145, 161,305 
character  and  relations  of 48, 
129, 135-137, 139, 145, 149, 152, 161,305-306 
correlation  of 370 
See  also  Potsdam. 
East  Lee,  rocks  at 579 
East  Mountain,  rocks  of 628 
Easton,  rocks  near 653 
Easton  schist,  character  and  distribution  of.  865-866 
Eastport,  rocks  near 496 
East  Wallingford,  rocks  at 561 
Eaton,  Amos,  on  Primitive  rocks 64, 
89-90,104,597,622,647,650 
Eaton,  J.  H.,  on  Baraboo  rocks 718,749 
Echo  Lake,  rocks  near 264,404,411,412,426 
Eckel,  E.  C,  on  southeast  New  York  rocks.  632,651 
Egan  Range,  rocks  in 46,794,800 
Eisen,  —  — ,  on  Lower  California  rocks 762 
Ejutla,  rocks  near 765,766 
Eldridge,  G.  H.,  on  Crested  Butte  quadran- 
gle   816,895 
on  Idaho  rocks 849,897 
on  Wyoming  rocks 844, 897 
Eldridge,  G.  H.,  Cross,  W.,  and  Emmons,  S. 
F.,  on  Denver  Basin 806,894 
Eleanor  Lake,  rocks  at 289 
Eleanor  slate,  character  and  distribution  of. .      289 
correlation  of 328-329 
Elftman,A.  H.,  on  Minnesota  rocks.  223-224,229,395 
Eliza,  Lake,  rocks  near 188 
Elk  Creek,  rocks  on 854 
Elkhorn  Gap,  rocks  of 840 
Elkhorn  quadrangle,  rocks  of 858 
Elk  Park,  rocks  at 820-821,823 
Elk  Range,  rocks  of 815-818 
Elliott,  J.  B.,  on  Georgia  rocks 690,716 
Ellis  limestone,  character  and  distribution  of.      843 
Ells,  R.  W.,  nomenclature  by 100-101, 106 
on  Archean 97, 106 
on  Charlotte  County 499-500, 522 
on  Eastern  Townships 485-186, 489 
on  Gaspe  Peninsula 520, 525 
on  Laurentian  of  Ottawa 460-461 
