208  PRE-CAMBRIAN    ROCKS    OF    NORTH    AMERICA.  [bull.  86. 
201  The  Iron  Ores  of  the  Penokee-Gogebic  Series  of  Michigan  and  Wisconsin,  C.  R. 
Van  Hise.     Am.  Jour.  Sci.,  3d  ser.,  vol.  xxxvn,  pp.  32-48,  with  plate. 
202  The  Distribution  of  the  Granites  of  the  Northwestern  States,  and  their  general 
lithologic  characters,  C.  W.  Hall.  Proc.  Am.  Assoc.  Adv.  Sci.,  37th  Meeting,  1889,  p. 
189. 
203  The  Greenstone  Schist  Areas  of  the  Menominee  and  Marquette  Regions  of  Mich- 
igan, George  Huntington  Williams.  Bull.  U.  S.  Geol.  Survey  No.  62,  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  Superior.  Proc.  Am.  Assoc.  Adv.  Sci., 
36th  Meeting,  pp.  225-226. 
204 Explanatory  and  Historical  Note,  R.  D.  Irving.  Bull.  U.  S.  Geol.  Survey,  No. 
62,  pp.  1-30. 
205 The  Penokee  Iron-Bearing  Series  of  Michigan  and  Wisconsin,  R.  D.  Irving  and 
C.  R.  Van  Hise.  U.  S.  Geol.  Survey,  Monograph  xix,  pp.  — ,  with  pis.  and  maps. 
See  also  Tenth  Ann.  Rept.  U.  S.  Geol.  Survey,  1888-'89,  341-507,  with  23  pis.  and 
maps. 
206  An  attempt  to  Harmonize  some  Apparently  Conflicting  Views  of  Lake  Superior 
Stratigraphy,  C.  R.  Van  Hise.     Am.  Jour.  Sci.,  3d  ser.,  vol.  xli,  1891,  pp.  117-137. 
207  Notes  on  the  Petrography  and  Geology  of  the  Akeley  Lake  Region,  in  north- 
eastern Minnesota,  W.  S.  Bayley.  19th  Ann.  .Rept.  Geol.  and  Nat.  Hist.  Survey  of 
Minn,  for  the  year  1890,  pp.  193-210. 
208  Based  on  unpublished  field  notes  made  b y  W.  N.  Merriam  in  the  summers  of  1888 
and  1889. 
209  Based  on  unpublished  field  notes  made  by  C.  R.  Van  Hise  in  the  summer  of  1890. 
210  Based  on  unpublished  field  notes  made  by  Profs.  Raphael  Pumpelly  and  C.  R, 
Van  Hise  in  the  summers  of  1891  and  1892. 
