548 
INDEX. 
Page. 
Unconformities— Continued. 
within  Vermilion  series 181,182 
Willison 182 
Uniformity,  law  of 513-514 
Upham,  on  the  Minnesota  valley. 121 
on  Minnesota 122, 123 
onquartzites  of  Minnehaha  county, 
Dakota. 124 
Utah,  literature  of 286-296 
Urgiimmerschief er,  Lossen  on 526 
Urgneiss,  Lossen  on 525 
Uriconian,  Callaway  on 525 
Urthonschief er,  Lossen  on 526 
V. 
Van  Hise,  on  relations  of  Huronian  and 
Laurentian 44-46 
on  central  Wisconsin 116 
on  quartz  enlargements 140 
on   iron   ores  of  Penokee-Gogebic 
district 148-149 
on  the  Penokee  series 150-154 
on  unconformity  between  lower  and 
upper  Huronian 1 54-1 55 
on  the  Menominee  district 156 
on  Menominee  and  Felch  mountain 
districts 156 
on  Black  hills 259-260 
on  Missouri 264-265 
on    Laramie    and    Medicine    Bow 
ranges 275-276 
on  Uinta  mountains 289 
on  Wasatch  mountain  s 294-295 
on  Quartzite  mountains 320-323 
onAdirondacks.. 398-399 
Vanuxem,  en  New  York 387,388,389-390 
on  Franklin,  New  Jersey 399 
on  Primitive 470 
Vennor,  on  Hastings  county 28-29,30 
on  Laurentian 28, 29, 30, 31 ,  33,  38 
on  southern  New  Brunswick 231 
on  unconformity  in  Laurentian 471 
on  Hastings  series 489,498 
Vermilion,  conformable  with  Keewatin, 
N.  H.  Winchellon 129 
A.  andN.  H.  Winchellon 169 
Vermilion  district,  iron  ores  of 171, 172 
Vermilion  range,  A.  H.  Chester  on 123 
N.  H.  Winchellon 123-124 
Vermilion  series,  unconfonnably  ftelow 
Animikie. 181,182 
unconformity  within 181,182 
relations  to  original  Huronian 185-186 
Vermont,  literature  of 355-361 
Virgin  mountains,  Marvine  on 296 
Virginias,  literature  of  the 416-418 
W. 
Wadsworth,  indebtedness  to 17 
on  iron  and  copper  districts  of  lake    • 
Superior 86-87 
on  fossil  from  lake  Superior 88 
on  upper  peninsula  of  Michigan 102 
on  lake  Superior  sandstone 102. 103, 158, 
159.  160 
on  Keweenawan 161 
Page. 
Wadsworth— Continued. 
on  lake  Superior  succession 163, 165 
on  lake  Superior  eruptives. 173 
on  unconformity  within  Huronian.         180 
on  iron  ores  of  lake  Superior 170, 171, 172 
on  Massachusetts 367,369 
on  pre-Cambrian  succession  454-457,510,511 
on  Azoic 470 
on   origin  and  stratigraphy  of  Ar- 
chean.. 481 
on  stratigraphy  of  Archean 488 
on  pre-Potsdam  life 491-492 
Walcott,  indebtedness  to... 16,17 
on  fossils  in  Newfoundland  Algon- 
kian 251,492 
on  Newfoundland 251 
on  Olenellus  of  Newfoundland 251 
on  Texas 266-267 
on  Llano  series 269,504 
on  Wasatch  mountains 293,294 
on  Eureka  series 305 
on  Grand  canyon 329-330 
on  New  England 381,382,385,415 
onAdirondacks 398,508 
on  fossils  of  Grand  canyon 492 
on  pre-Cambrian  succession 468-469 
on  Algonkian. 469 
on  upper  limit  of  Algonkian 495-496 
Wasatch  mountains,  Fortieth  Parallel 
Survey  on 297 
Archean  of. .'298-299,475,487 
Algonkian  of 299,505 
literature  of 289-295 
Washington,  literature  of 337 
Wet  mountains,  literature  of 313-314 
White  on  Iowa.  Minnesota,  and  Dakota .         119 
White  mountains,  Rogers  on 350 
Whitney,  indebtedness  to 17 
on  Keweenaw  point 73,76-77 
on  1' Anse,  Michigan 74, 76-77 
on  iron  ore  of  Michigan 75 
on  lake  Superior 75,76 
on  the  copper  lands  of  lake  Supe- 
rior  _ 78-79 
on  iron  region  of  lake  Superior 79-82 
on  Azoic  of  lake  Superior 82-85, 167 
on  lake  Superior  sandstone 82,84,85, 157, 
158, 160, 163, 165 
on  iron  ores  of  lake  Superior 85, 170 
on  Keweenawan 161 
on  lake  Sitperior  succession... 163,195. 
on  lake  Superior  eruptives 173 
on  unconformity  within  Huronian.         179 
on  lake  Superior  syncline 196 
on  Missouri 261-262 
on  California 335,341 
on  pre-Cambrian  succession.  454-457, 510, 511 
on  Azoic 470 
on  origin  of  Archean 481 
on  stratigraphy  of  Archean 488 
on  pre-Potsdam  life 491-492 
Whittlesey,  on  northern  Wisconsin.  ..83-84, 106 
on  Laurentian  and  Huronian  of  lake 
Superior 86 
on  lake  Superior  sandstone 158 
on  Laurentian  of  lake  Superior 168 
