INDEX. 
931 
Page. 
Saganaga  Lake  granite,  origin  of 209 
Saguenay,  rocks  of 460 
St.  Amo,  rocks  at 513 
St.  Anns  Mountain,  rocks  of 507, 509 
St.  Anthony  Falls,  rocks  near 300 
St.  Cloud  granite,  character  and  distribution 
of 201   ! 
St.  Croix  district,  description  of 188  I 
St.  Croix  River,  rocks  on 1X2, 183, 180, 192,  | 
197, 198,  200,  213,  243,  299,  304,  308,  349 
St.  Croix  sandstone,  correlation  of 304 
Ste.  Genevieve,  rocks  near 528  ! 
St.  Francis  Cape,  rocks  of 536  j 
St.  Francois,  rocks  near 739  I 
St.  Georges  Bay,  rocks  of 517 
St.  Ignace,  rocks  near 205 
St.  Jerome,  rocks  near 404 
St.  Joe  River,  rocks  on 851-852 
St.  John,  rocks  near 490,  495, 496, 497-498, 510 
St.  John,  Orestes,  on  Black  Mountains.  708-709,891 
on  Gros  Ventre  Range 842, 890 
on  Wind  River  Range 8-12, 890 
St.  John  group,  character  and  distribution  of.      491 
correlation  of 498 
St.  John  Lake,  rocks  near 530 
St.  Johns  River,  rocks  of 492, 490, 502 
St.  Joseph  Island,  rocks  of 300, 410 
St.  Joseph  Lake,  rocks  of 535 
St.  Lawrence  River,  rocks  near 448- 
449,  467-468, 528, 529,  614-615 
St.  Louis  gabbro,  character  and  distribution 
of 344 
St.  Louis,  rocks  near 733, 734 
St.  Louis  River,  rocks  on 136, 
186, 187, 196, 197, 243, 298, 306, 363, 382 
St.  Mary  Lake,  rocks  on 859, 802 
St.  Marys  River,  rocks  of 108, 118,  404,  408 
St.  Marys  Strait,  rocks  near 300 
St.  Maurice,  rocks  near 529 
St.  Maurice  River,  rocks  near 476 
St.  Paul  Island,  rocks  of 507 
St.  Peter  sandstone,  character  and  distribu- 
tion of 175 
St.  Regis  de  Borgia  River,  rocks  on 851 
St.  Vrains  Creek,  rocks  on 801 
Salem,  rocks  near 573 
Salida,  rocks  near 45, 
804, 814,  810, 817-818, 828, 829, 833 
on  derivation  ofpre-Cambrian  sediments.       24 
Salisbury,  R.  1).,  and  Chamberlin,  T.  C,  on 
correlation 47 
on  pre-Cambrian  subdivision 20 
Salisbury  granite,  character  and  distribution 
of 678-679,681 
Salmon  City,  rocks  near 849 
Salmon  City  schist,  character  and  distribu- 
tion of 872 
Salmon  Mountains,  rocks  near 874 
.Salmon  River,  rocks  near 873,879-880 
Salt  Lake,  rocks  of 784 
Saluda,  rocks  near ".      688 
San  Bernardino  Range,  rocks  of 80S,  870, 872 
San  Carlos  River,  rocks  on 772 
Sanders,  G.  N.,  on  Lake  Superior  mineral  re- 
gions  298,  400,  401 
Page. 
Sandia  Mountains,  rocks  of 45, 768,  771 1 
San  Diego,  rocks  near 869 
Sand  Island  River,  rocks  of 279 
Sandy  Bay,  rocks  at 569 
San  Emidio  Canyon,  rocks  at 870 
San  Fernando  Creek,  rocks  on 744 
Sangre  de  Cristo  Mountains,  rocks  in 45, 
812-814, 824, 828 
San  Ignacio,  rocks  of 761 
San  Juan  Mountains,  rocks  on 821,831 
San  Marcos,  rocks  near 763 
San  Pedro  River,  rocks  on 776 
San  Saba  River,  rocks  near 742 
Santa  Catalina  Mountains,  rocks  of 775, 776 
Santa  Cruz  Range,  rocks  of 872 
Santa  Fe,  rocks  near 768 
Santa  Fe  Mountains,  rocks  of 45, 768, 769, 770 
Santa  Lucia  granite,  character  and  distribu- 
tion of ! 872 
Santa  Rita  Mountains,  rocks  near 768 
Sapper,  Carl,  on  Guatemala  rocks 754, 891 
on  Mexican  rocks 754, 766, 891 
Saranac  Lake,  rocks  near 600, 004 
Sardeson,  F.  W.,  on  Redstone  quartzite 252 
Sardeson,  F.  W.,  and  Hall,  C.  W.,  on  Minne- 
sota geology 213, 395 
Saskatchewan  River,  rocks  near 262, 544 
Sault  Ste.  Marie,  rocks  near 256, 264, 273, 404, 425 
Sault  sandstone,  character  and  distribution 
of 259,265 
correlation  of 260 
Sawatch  Range,  rocks  of 815-818, 824, 829 
Sawmill  Canyon,  rocks  in 785, 788, 790 
Sawteeth  Mountains,  rocks  on 198-199, 215 
Sayers  Lake,  rocks  at 290, 291 
Scandinavia,  pre-Cambrian  rocks  in 50-51 
Schell  Creek  Range,  rocks  of 46, 79-1, 800 
Schiel,  James,  on  Colorado  rocks 812, 818, 893 
on  Nevada  rocks 791, 893 
Schist  Lake,  rocks  near 287 
Schists,  character  of 75 
minerals  in 75 
Schmidt,  Adolph,  onMissouri  iron  deposits.  736,752 
Schmitz,  E.  J.,  on  Alabama  geology 692, 716 
Schoolcraft,  II.  R.,  on  Lake  Superior  region.. .     298, 
300, 400, 401 
Schrader,  F.  C,  on  Alaska  rocks...  884,886-887,890 
Schreiber,  rocks  near 288,334 
Schultz  Lake,  rocks  on 540 
Schuylkill  River,  rocks  near 655,657,659,661 
Scotland,  deformation  in 50 
Scott  Valley,  rocks  near 873 
Sea  Gull  Lake,  rocks  of. 205 
Seaman,  A.  F...  geologic  maps  revised  by..  174,391 
on  Keweenawan  copper  range 169, 390 
on  Lower  Iluronian. 173,390 
Seaman,  A.  F...  and  Fane.  A.  (  ..  on  geologic 
section  of  Michigan !7.">  I77.:'.'.i! 
Seaman,  A.  I''..,  and  Sutton.  \V.  .1..  on  Gogebic 
district  conglomerate 163,390 
Seaman,  A.  E.,  and  Van  Hise,  C.  IF.  on  <)  nap- 
in- contact  12!  425,  llti 
Seaman.  A..  F...  and  others,  on  Fake  Superior 
region 17:'-  174,293,294  295,390  .<'.»1 
Sears.  .1.  IF,  on  Fssex  County  rocks 578,595 
