444  PRE-CAMBRIAN    GEOLOGY   OF    NORTH   AMERICA. 
NOTES. 
1  Geological  and  mineralogical  observations  on  the  northwest  portion  of  Lake 
Huron,  by  John  J.  Bigsby.    Am.  Jour.  Sei.,  1st  ser.,  vol.  3,  1821,  pp.  245-272. 
2  Report  on  the  district  lying  in  a  general  line  from  Georgian  Bay  on  Lake 
Huron,  and  the  lower  extremity  of  Lake  Erie,  by  Alexander  Murray.  Kept. 
Prog.  Geol.  Survey  Canada,  1842-43,  pp.  10-17. 
3  Report  of  W.  E.  Logan.     Rept.  Prog.  Geol.  Survey  Canada,  1845-46,  pp.  98. 
4  Report  of  observations  made  in  the  survey  of  the  Upper  Peninsula  of 
Michigan,  by  John  Locke.  Executive  Docs.,  1st  sess.  30th  Cong.,  No.  2,  vol.  2, 
1847-18,  pp.  183-199. 
5  Report  of  an  exploration  of  several  points  on  the  St.  Marys  River,  by  Wil- 
liam F.  Channing.     Idem,  pp.  199-209. 
6  On  the  north  coast  of  Lake  Huron,  by  Alexander  Murray.  Rept.  Prog.  Geol. 
Survey  Canada,  1847-48,  pp.  93-124. 
7  Report  of  the  Geological  Survey  of  Canada  on  the  north  shore  of  Lake 
Huron,  by  W.  E.  Logan,  1849,  pp.  8-20. 
8  On  the  geology  of  parts  of  the  coast  of  Lake  Huron,  the  Spanish  River,  etc., 
by  Alexander  Murray.     Rept.  Prog.  Geol.  Survey  Canada,  1848-49,  pp.  7-46. 
9  Oil  the  footprints  occurring  in  the  Potsdam  sandstone  of  Canada,  by  W.  E. 
Logan.  Quart.  Jour.  Geol.  Soc,  London,  vol.  8,  1852,  pp.  199-213,  with  a 
geological  map. 
10  On  the  topographical  and  geological  features  of  the  region  between  the 
Ottawa  River  and  Georgian  Bay,  as  well  as  north  of  Lake  Huron,  by  Alexander 
Murray.     Rept.  Prog.  Geol.  Survey  Canada,  1853-1856,  pp.  59-190,  with  2  maps. 
11  Remarks  relating  chiefly  to  the  succeeding  reports,  by  W.  E.  Logan.  Rept. 
Prog.  Geol.  Survey  Canada,  1857,  pp.  1-12. 
12  On  the  coast  at  the  mouth  of  French  River,  Georgian  Bay;  on  Echo  Lake 
and  its  environs;  and  on  the  limestone  of  Bruce  Mines,  by  Alexander  Murray. 
Idem,  pp.  13-27,  with  a  map. 
13  On  the  division  of  the  Azoic  rocks  of  Canada  into  Huronian  and  Laurentian, 
by  Sir  William  E.  Logan.  Proc.  Am.  Assoc.  Adv.  Sci.,  11th  meeting,  pt.  2,  1857, 
pp.  44-47. 
14  On  the  country  between  the  Thessalon  River  and  Lake  Huron,  and  between 
the  Thessalon  and  Mississagui,  by  Alexander  Murray.  Rept.  Prog.  Geol.  Survey 
Canada,  1858,  pp.  67-100,  with  a  map  and  section. 
15  On  the  Cambrian  and  Huronian  formations,  by  J.  J.  Bigsby.  Quart.  Jour. 
Geol.  Soc,  London,  vol.  19,  1863,  pp.  36-52. 
18  Report  of  progress  of  the  Geological  Survey  of  Canada  from  its  commence- 
ment to  1863,  by  W.  E.  Logan,  pp.  983,  accompanied  by  an  atlas. 
17  On  the  occurrence  of  organic  remains  in  the  Laurentian  rocks  of  Canada, 
by  Sir  W.  E.  Logan.     Quart.  Jour.  Geol.  Soc,  London,  vol.  21,  1865,  pp.  45-50. 
18  Report  on  geological  researches  north  of  Lake  Huron  and  east  of  Lake 
Superior,  by  Robert  Bell.  Rept.  Prog.  Geol.  Survey  Canada,  1876-77,  pp. 
193-220. 
10  Descriptive  sketch  of  the  physical  geography  and  geology  of  the  Dominion 
of  Canada,  by  Alfred  R.  C.  Selwyn  and  G.  M.  Dawson,  1884,  pp.  55. 
20 Is  there  a  Huronian  group?  by  R.  D.  Irving.  Am.  Jour.  Sci.,  3d  ser.,  vol. 
34,  1887,  pp.  204-216,  249-263,  366-374. 
21  The  original  Huronian,  by  N.  H.  Winchell.  Sixteenth  Ann.  Rept.  Geol. 
and  Nat.  Hist.  Survey  Minnesota.  1887,  pp.  12-40. 
22  Observations  in  the  typical  Huronian  region  of  Canada,  by  Alexander 
Winchell.    Idem,  pp.  145-171. 
