LAKE   SUPERIOR   REGION.  389 
47  Mode  of  deposition  of  the  iron  ores  of  the  Menominee  range,  Michigan,  by 
John  Fulton.     Trans.  Am.  Inst.  Min.  Eng.,  vol.  16,  1887,  pp.  525-536. 
48  Report  of  N.  H.  Winchell.  Sixteenth  Ann.  Rept.  Geol.  and  Nat.  Hist.  Sur- 
vey Minnesota  for  1887,  pp.  13-129. 
j;i  Report  of  Alexander  Winchell.     Idem,  pp.  133-391. 
50  Based  on  unpublished  field  notes  made  by  W.  N.  Merriam  in  the  summers 
of  1888  and  1889. 
51  Based  on  unpublished  field  notes  made  by  C.  R.  Van  Hise  in  the  summer  of 
1890. 
52  The  greenstone  schist  areas  of  the  Menominee  and  Marquette  regions  of 
Michigan,  by  George  Huntington  Williams.  Bull.  U.  S.  Geol.  Survey  No.  62. 
1890,  pp.  31-238,  with  16  pis.  and  maps.  See  also  Some  examples  of  dynamic 
metamorphism  of  the  ancient  eruptive  rocks  on  the  south  shore  of  Lake  Su- 
perior.    Proc.  Am.  Assoc.  Adv.  Sci.,  36th  meeting,  1888,  pp.  225-226. 
53  A  sketch  of  the  geology  of  the  Marquette  and  Keweenawan  district,  by 
M.  E.  Wadsworth.  Along  the  south  shore  of  Lake  Superior,  by  Julian  Ralph. 
1st  ed.,  1890,  pp".  63-82. 
51  Explanatory  and  historical  note,  by  R.  D.  Irving.  Bull.  U.  S.  Geol.  Survey 
No.  62,  1890,  pp.  1-30. 
55  The  Penokee  iron-bearing  series  of  Michigan  and  Wisconsin,  by  R.  D.  Irving 
and  C.  R.  Van  Hise.  Mon.  U.  S.  Geol.  Survey,  vol.  19,  1892,  pp.  534,  with  pis. 
and  maps.  See  also  Tenth  Ann.  Rept.  U.  S.  Geol.  Survey,  for  1888-S9,  1890,  pp. 
341-507,  with  23  pis.  and  maps. 
56  A  sketch  of  the  geology  of  the  Marquette  and  Keweenawan  district,  by 
.  M.  E.  Wadsworth.     Along'  the  south  shore  of  Lake  Superior,  by  Julian  Ralph. 
2d  ed.,  1891,  pp.  75-99. 
57  On  the  relations  of  the  eastern  sandstone  of  Keweenaw  Point  to  the  Lower 
Silurian  limestone,  by  M.  E.  Wadsworth.  Am.  Jour.  Sci.,  3d  ser.,  vol.  42,  1891, 
pp.   170-171    (communicated). 
58  The  south  trap  range  of  the  Keweenawan  series,  by  M.  E.  Wadsworth. 
Idem,  pp.  417-419. 
59  Based  on  unpublished  field  notes  made  by  Raphael  Pumpelly  and  C.  R.  Van 
Hise  in  the  summers  of  1891  and  1892. 
co  The  Huronian  volcanics  south  of  Lake  Superior,  by  C.  R.  Van  Hise.  Bull. 
Geol.  Soc.  America,  vol.  4,  1892,  pp.  435-436. 
61  Microscopic  characters  of  rocks  and  minerals,  by  A.  C.  Lane.  Rept.  State 
Board  Geol.  Survey  Michigan  for  1891-92,  Lansing,  1893,  pp.  176-183. 
62  A  sketch  of  the  geology  of  the  iron,  gold,  and  copper  districts  of  Michigan, 
by  M.  E.  Wadsworth.  Rept.  State  Board  Geol.  Survey  Michigan  for  1891-92, 
Lansing,  1893,  pp.  75-174.     See  also  Ann.  Repts.  1888-1892,  pp.  38-73. 
63  Subdivisions  of  the  Azoic  or  Archean  in  northern  Michigan,  by  M.  E.  Wads- 
worth.    Am.  Jour.  Sci.,  3d  ser.,  .vol.  45,  1893,  pp.  72-73. 
64  The  succession  in  the  Marquette  iron  district  of  Michigan,  by  C.  R.  Van 
Hise.     Bull.  Geol.  Soc.  America,  vol.  5,  1893,  pp.  5-6. 
65  The  geology  of  that  portion  of  the  Menominee  range  east  of  Menominee 
River,  by  Nelson  P.  Hulst.  Proc.  Lake  Superior  Min.  Inst.,  March,  1893,  pp. 
19-29. 
6fiA  contact  between  the  Lower  Huronian  and  the  underlying  granite  in  the 
Republic  trough,  near  Republic,  Mich.,  by  H.  L.  Smyth.  Jour.  Geology,  vol.  1, 
No.  3,  1893,  pp.  26S-274. 
07  Two  new  geological  cross  sections  of  Keweenaw  Point,  by  L.  L.  Hubbard. 
Proc.  Lake  Superior  Min.  Inst.,  vol.  2,  1894,  pp.  79-90. 
"Character  of  folds  in  the  Marquette  iron  district,  by  < J.  Et.  Van  Hise.  Proc. 
Am.  Assoc.  Adv.  Sci.,  42d  meeting,  1894,  p.  171  (abstract). 
