/ 
346  PRE-CAMBRIAN   ROCKS    OF    NORTH   AMERICA.  [hull.  86. 
West,  explored  in  1857  and  1858,  by  Lieut.  Joseph  C.  Ives.     Washington,  1861,  Part 
3,  pp.  154. 
80  Report  of  Progress  and  Synopsis  of  the  Field  Work,  from  1860  to  1864,  J.  D. 
Whitney.     Geological  Survey  of  California,  vol.  I,  Geology,  pp.  498. 
81  Report  on  the  Geology  of  a  Portion  of  Southern  California,  Jules  Marcou.  Re- 
port of  Chief  of  Enginee  rs  for  the  year  1876,  Part  in,  pp.  378-392. 
82  Report  on  the  Geological  and  M  ineralogical  Character  of  Southeastern  Cali- 
fornia and  adjacent  regions,  Oscar  Loew.     Ibid.,  pp.  393-408. 
^Geological  Report  on  the  portions  of  Western  Nevada  and  Eastern  California 
between  the  parallels  of  39°  30'  and  38°  30',  explored  in  the  field-season  of  1876,  A. 
R.  Conkling.  Report  of  the  Chief  of  Engineers  for  the  year  1877,  part  2,  Appendix 
H,  pp.  1285-1295. 
84  Geological  Report  on  portions  of  Western  Nevada  and  Eastern  California,  in- 
cluding part  of  the  Sierra  Nevada  Range,  A.  R.  Conkling.  Report  of  the  Chief  of 
Engineers  for  the  year  1878,  part  3,  pp.  1589-1607. 
85 Geology  of  the  Quicksilver  Deposits  of  the  Pacific  Slope,  George  F.  Becker. 
Monograph  13  U.  S.  Geol.  Survey,  pp.  xix,  486;  7  pi.  and  atlas  of  14  sheets  folio. 
86  The  Structure  of  a  portion  of  the  Sierra  Nevada  of  California,  Geo.  F.  Becker.  Bull. 
Geol.  Soc.  of  America,  vol.  n,  pp.  49-74. 
87  Report  upon  the  Geology  of  the  Central  Portion  of  Washington  Territory,  George 
Gibbs.  Reports  of  Explorations  and  Surveys  from  the  Mississippi  River  to  the  Pacific 
Ocean,  in  1853->54,  vol.  I,  pp.  473-486. 
88Report  on  the  Coal  Fields  of  the  East  Coast  of  Vancouver  Island,  James  Richard- 
son. Rept.  of  Prog.  Geol.  Survey  of  Canada  for  1871-72,  pp.  73-100.  Accompanied 
by  a  map. 
89  On  the  Coal  Fields  of  Vancouver  and  Queen  Charlotte  Islands,  James  Richard- 
son. Rept.  of  Prog.  Geol.  Survey  of  Canada  for  1872-73,  pp.  32-65.  Accompanied  by 
a  map. 
90  On  Explorations  in  British  Columbia,  James  Richardson.  Rept.  of  Prog.  Geol. 
Survey  of  Canada  for  1874-75,  pp.  71-83. 
91  OnExploration  in  British  Columbia,  A.  R.  C.  Selwyn.  Rept.  of  Prog.  Geol.  Survey 
of  Canada  for  1875-76,  pp.  28-86 ;  with  a  sketch  map. 
92  Geological  and  Topographical  Notes  on  the  Lower  Peace  and  Athabasca  Rivers, 
John  Macoun.     Ibid.,  pp.  87-95. 
^Report  on  Explorations  in  British  Columbia,  George  M.  Dawson.  Ibid.,  pp. 
233-265. 
94  Report  on  Exploration  in  British  Columbia,  George  M.  Dawson.  Rept.  of  Prog. 
Geol.  Survey  of  Canada  for  1876-77,  pp.  17-94.     With  a  geological  map. 
95  Preliminary  Report  on  the  Physical  and  Geological  Features  of  the  Southern 
Portion  of  the  Interior  of  British  Columbia,  G.  M.  Dawson.  Rept.  of  Prog.  Geol. 
Survey  of  Canada  for  1877-78,  pp.  1-173  B.    With  a  map. 
96  Report  on  the  Geology  of  the  Country  near  the  Forty-ninth  Parallel  of  North 
Latitude  west  of  the  Rocky  Mountains,  from  Observations  made  in  1859-760,  H. 
Bauerman.  Rept.  of  Prog.  Geol.  and  Nat.  Hist.  Survey  and  Museum  of  Canada  for 
1882-'83-'84,  pp.  3-42  B. 
97  Preliminary  Report  on  the  Physical  and  Geological  Features  of  that  portion  of 
the  Rocky  Mountains  between  Latitudes  49°  and  50°  30',  G.  M.  Dawson.  Ann.  Rept. 
Geol.  and  Nat.  Hist.  Survey  of  Canada  for  1885,  vol.  I  (new  series),  pp.  5-169  B. 
With  a  map. 
98  Report  on  a  Geological  Examination  of  the  northern  part  of  Vancouver  Island 
and  adjacent  coasts,  George  M.  Dawson.  Ann.  Rept.  Geol.  and  Nat.  Hist.  Survey  of 
Canada  (new  series),  vol.  n,  1886,  pp.  129  B.     With  a  map. 
99  Report  on  the  Geological  Structure  of  a  portion  of  the  Rocky  Mountains,  R.  G. 
McConnell.     Ibid.,  pp.  1-41  D. 
