544 
INDEX. 
Page. 
Nipissing,  Laurentian  of  ... -  34 
Algonkianof 497 
Norian,  of  Adirondacks » 413 
Adams,  Hunt,  Selwyn,  Wadsworth, 
and  Whitney,  on 451,453-454, 457- 
458, 462, 465, 474 
relations  to  Laurentian 471 
Norian  series,  Selwyn  on 32 
North  Carolina,  literature  of 418-422 
North  Somerset,  Haughton  on 216 
Norway,  Reuschon 526 
Norwood,  on  Minnesota  and  lake  Supe- 
rior       74,83 
on  lake  Superior  sandstone 157 
on  Missouri 263 
Notre  Dame  mountains,  Murray  on 223 
bay,  Murray  on 248-249 
Nova  Scotia,  literature  of 239-244 
Algonkianof 502-503 
granite 245 
schist 246 
Slates 245-246,247 
Oceanic  era,  Dana  on 469 
Ogishki  conglomerate,  Alex.  Winchell 
on . 127-128 
Olenellusof  Newfoundland,  Walcott  on.         251 
Olmsted,  on  North  Carolina 418 
Ontarian,  proposal  of,  by  Lawson 68, 474 
defined 193-194 
Ontario,  eastern,  literature  of 23-32 
western,  succession  in 190-191 ,  195 
Ontario  series,  equivalents  of 190-191 
Oquirrh  mountains,  literature  of 295 
Organic  material  in  Huronian 194 
Original  Huronian, lake  Superior  equiv- 
alents of 185-187 
Ottawa  river,  Algonkian  of 497 
Owen,  on  lake  Superior 73-74,82 
on  lake  Superior  sandstone 73, 83, 157, 158 
on  lake  Superior  syncline 196 
on  Unaka  mountains,  Tennessee. . .         422 
Packard  on  northern  Labrador 217 
Paleontology    in    Algonkian   stratig- 
raphy   514 
Park  range,  literature  of _ .272-276, 316 
Parry,  on  Melville  peninsula 214 
Peabody  bay,  Greenland,  Kane  on 215 
Peale,  on  Wind  river  mountains 280,289 
on  Uinta  mountains 289 
on  Montana ..282,283-284,286,299 
on  Three  Forks  sheet,  Montana 284-286 
on  Wasatch  mountains 290, 31 6, 317 
on  Sawatch  mountains 316 
on  Elk  mountains 317 
on  Front  range 310 
on  Gunnison  and  Grand  rivers 318-319 
Peck,  on  Georgia 425 
Pelly- Yukon,  McConnell  on 217 
Pennsylvania,  literature  of 404-410 
pre-Cambrian  of 415 
Page. 
Penokee,  unconformably  below  Kewee- 
nawan,  Irving  on 112-113 
equivalent  to  Animikie  series 187-189 
Penokee  district,  Chamberlin,  Irving, 
and  Wright  on 111,113 
iron  ores  of 171,172 
eruptives  of 173 
succession  in 187-189,195 
Penokee-Gogebic  district,  Alex.  Win- 
chell on  101-102 
iron  ores  of,  Van  Hise  on 148-149 
Penokee  range,  Whittlesey  and  Lapham 
on 106 
Penokee  series,  Irving  and  Van  Hise  on  150-154 
unconformity  at  base  of 175 
unconformity  within 181,182 
relations  to  original  Huronian 185 
equivalents  of 187-189 
Percival,  on  the  Baraboo  and  Portland 
quartzites 105 
on  Connecticut 378-379, 385 
on  cleavage  and  stratification 384 
on  New  England  granites 384 
on  Primitive 470 
on  pre-Cambrian  succession 474 
Period,  use  of  term 479 
Perry,  on  Worcester,  Massachusetts ...         365 
Pictou  coal  fields,  Logan  and  Hartley  on        241 
Pierce,  on  N  ew  Jersey  Highlands 399 
on  Staten  island,  New  York 386 
Pifion  range,  Algonkian  of 506 
Pipestone  quarries,  Catlin  on 72 
Pogonip  range,  Algonkian  of 506 
Portland  group 238 
Bailey,  Matthew,  and  Hartt  on 230,231 
Portland  quartzite,  Percival  and  Irving 
on 105-107 
Potsdam,  unconformably  above  Hu- 
ronian, Murray  on 249 
Powell,  on  Uinta  mountains 287,288 
on  Grand  canyon  of  the  Colorado. .  326-327, 
329,  331 
on   Archean  of  Arizona  and  New 
Mexico 331 
on  Tonto  sandstone 331 
Pre-Cambrian  of  Delaware 415 
of  Europe 524-527 
of  Great  Britain 525 
of  Maryland 415 
of  New  England 382-386 
of  New  Jersey 414 
of  New  York 415 
of  Pennsylvania 415 
succession  of  southern  New  Bruns- 
wick          238 
Prime,  on  Lehigh  County,  Pa 407 
Primitive,  Akerly,  Alexander,  Booth, 
Dewey,  Ducatel,  Amos  Eaton,  E. 
Emmons,  Edward  Hitchcoek, 
Jackson,  Mather,  Mitchell,  Per- 
cival, H.  D.  Rogers,  W.  B. 
Rogers,  Silliman,  Tuomey,  and 
Vanuxem  on 470 
use  of  term 470-473 
rocks,  E  aton  and  Maclure  on 440 
Primordial  quartzite.  N.  H.  Winchell 
on  a 128-129 
