SUMMAKY   OF    GENERAL   LITERATURE.  107 
36  The  classification  of  the  Archean,  by  A.  P.  Coleman.  Proc.  and  Trans.  Roy. 
Soc.  Canada,  2d  ser.,  vol.  8,  sec.  4,  1902,  pp.  135-148. 
37  The  Laurentian  peneplain,  by  A.  W.  G.  Wilson.  Jour.  Geology,  vol.  11, 
1903,   pp.  615-669. 
3SA  treatise  on  metamorphism,  by  C.  R.  Van  Hise.  Mon.  U.  S.  Geol.  Survey, 
vol.  47,  1904,  pp.  12S6. 
3U  The  contact  of  the  Archean  and  post-Archean  in  the  region  of  the  Great 
Lakes,  by  A.  B.  Willmott.    Jour.  Geology,  vol.  12,  1904,  pp.  40^2. 
40  Preliminary  report  on  the  geology  and  underground  water  resources  of 
the  central  Great  Plains,  by  N.  H.  Darton.  Prof.  Paper  U.  S.  Geol.  Survey 
No.  32,  1905. 
41  Geological  map  of  North  America,  with  explanatory  text,  compiled  by 
Bailey  Willis  in  cooperation  with  the  Canadian,  Mexican,  and  United  States 
geological  surveys  for  Tenth  meeting  of  the  International  Geological  Congress  at 
Mexico    City,    1906. 
42  The  limeless  ocean  of  pre-Cambrian  time,  by  Reginald  A.  Daly.  Am.  Jour. 
Sci.,  4th  ser.,   vol.  23,  1907,  pp.  93-115. 
43  A  Lower  Huronian  ice  age,  by  A.  P.  Coleman.  Am.  Jour.  Sci.,  4th  ser., 
vol.  23,   1907,   pp.   187-192. 
44The  problem  of  the  pre-Cambrian,  by  Charles  R.  Van  Hise.  Bull.  Geol. 
Soc.  America,  vol.  19,  1908,  pp.  1-28. 
45  The  origin  of  augite  andesite  and  of  related  ultra-basic  rocks,  by  Reginald  A. 
Daly.     Jour.  Geology,  vol.  16,  1908,  pp.  401-420. 
