LAKE   SUPERIOR   REGION.  391 
were  present  by  invitation  W.  G.  Miller,  A.  C.  Lane,  and  for  parts  of  the  trip 
A.  E.  Seaman,  W.  N.  Merriam,  J.  U.  Sebenius,  and  W.  N.  Smith. 
89  Maps  of  the  Marquette,  Menominee,  and  Gogebic  districts,  Michigan,  pre- 
pared by  A.  E.  Seaman  for  the  St,  Louis  exposition,  1904.     Unpublished. 
90  The  Menominee  iron-bearing  district  of  Michigan,  by  W.  S.  Bayley.  Mon. 
U.  S.  Geol.  Survey,  vol.  40,  1904,  p.  513. 
91  The  geology  of  some  of  the  lands  in  the  Upper  Peninsula,  by  R.  S.  Rose. 
Proc.  Lake  Superior  Min.  Inst.,  1904,  pp.  S8-102. 
92  Unpublished  notes  of  field  work  done  in  1905,  by  G.  W.  Corey  and  C.  F. 
Bowen. 
93  Black  River  work,  by  A.  C.  Lane.  Ann.  Rept.  Geol.  Survey  Michigan  for 
1904,  1905,  pp.  158-162. 
94  Report  of  progress  in  the  Porcupines,  by  F.  E.  Wright.  Ann.  Rept.  Geol. 
Survey  Michigan  for  1903,  1905,  pp.  33-44. 
95  The  geology  of  Keweenaw  Point — a  brief  description,  by  A.  C.  Lane.  Proc. 
Lake  Superior  Min.  Inst.,  vol.  12,  1907,  pp.  81-104. 
90  Notes  on  the  geological  section  of  Michigan ;  part  1,  the  pre-Ordovician,  by 
A.  C.  Lane  and  A.  E.  Seaman.     Jour.  Geology,  vol.  15,  1907,  pp.  680-695. 
97  A  geological  section  from  Bessemer  down  Black  River,  by  W.  C.  Gordon  and 
Alfred  C.  Lane.     Ann.  Rept.  Geol.  Survey  Michigan  for  1906,  1907,  pp.  396-507. 
98  Report  of  a  geological  reconnaissance  of  the  Chippewa  land  district  of 
Wisconsin,  etc.,  by  David  D.  Owen.  Senate  Docs.,  1st  sess.  30th  Cong.,  1847,  vol. 
7,  No.  57,  pp.  72. 
99  Preliminary  report,  containing  outlines  of  the  progress  of  the  geological 
survey  of  Wisconsin  and  Iowa,  up  to  October  11,  1847,  by  David  Dale  Owen. 
Senate  Docs.,  1st  sess.  30th  Cong.,  1847,  vol.  2,  No.  2,  pp.  160-174. 
100  Description  of  part  of  Wisconsin  south  of  Lake  Superior,  by  Charles  Whit- 
tlesey. Report  of  a  geological  survey  of  Wisconsin,  Iowa,  and  Minnesota,  1852, 
pp.  419-470. 
101  The  Penokee  iron  range,  by  Increase  A.  Lapham.  Trans.  Wisconsin  State 
Agr.  Soc,  vol.  5,  185S-59,  pp.  391-100,  with  map.  See  also  Report  to  the  di- 
rectors of  the  Wisconsin  and  Lake  Superior  Mining  and  Smelting  Company,  in 
the  Penokee  iron  range  of  Lake  Superior,  with  reports  and  statistics,  showing 
its  mineral  wealth  and  prospects,  charter  and  organization  of  the  Wisconsin 
and  Lake  Superior  Mining  and  Smelting  Company,  Milwaukee,  1860,  pp.  22-37. 
102  Geological  report  of  the  State  of  Wisconsin,  by  James  Hall.  Report  of  the 
Superintendent  of  the  Geological  Survey  (1861),  exhibiting  the  progress  of  the 
work,  p.  52. 
103  Physical  geography  and  general  geology,  by  James  Hall.  Report  on  the 
geological  survey  of  the  State  of  Wisconsin,  vol.  1,  1862,  pp.  1-72. 
104  The  Penokie  mineral  range,  Wisconsin,  by  Charles  Whittlesey.  Proc. 
Boston  Soc.  Nat.  Hist.,  vol.  9,  1863,  pp.  235-244. 
105  On  some  points  in  the  geology  of  northern  Wisconsin,  by  R.  D.  Irving. 
Trans.  Wisconsin  Acad.  Sci.,  vol.  2,  1873-74,  pp.  107-119.  See  also  On  the  age 
of  the  copper-bearing  rocks  of  Lake  Superior,  and  on  the  westward  continuation 
of  the  Lake  Superior  synclinal.  Am.  Jour.  Sci.,  3d  ser.,  vol.  S,  1X74.  pp.  46-56. 
Ann.  Rept.  Progress  and  Results  of  Wisconsin  Geol.  Survey  for  1876,  pp.  17-25. 
Report  of  progress  and  results  for  1874.     Geology  of  Wisconsin,  vol.  2.  pp.  46-49. 
106  Notes  on  the  geology  of  northern  Wisconsin,  by  E.  T.  Sweet.  Trans.  Wis- 
consin Acad.  Sci.,  1S75-76,  vol.  3,  pp.  40-55. 
107  Note  on  the  age  of  the  crystalline  rocks  of  Wisconsin,  by  R.  D.  Irving. 
Am.  Jour.  Sci.,  3d  ser.,  vol.  13,  1S77,  pp.  307-309. 
108  Report  of  progress  and  results  for  the  year  1875,  by  O.  W.  Wight.  Geology 
of  Wisconsin,  vol.  2,  1873-1877,  pp.  67-89. 
