752  PRE-CAMBRTAN    GEOLOGY    OF    NORTH   AMERICA. 
52  Some  remarks  on  the  geology  of  the  State  of  Missouri,  by  Dr.  H.  King. 
Proc.  Am.  Assoc.  Adv.  Sci.,  5th  meeting,  1851,  pp.  182-201. 
53  The  metallic  wealth  of  the  United  States,  by  J.  D.  Whitney.  Philadelphia, 
1854,  510  pp. 
54  First  and  second  annual  reports  of  the  Geological  Survey  of  Missouri,  by 
G.  C.  Swallow.     Jefferson  City,  1855,  207,  239  pp. 
55  Geological  report  of  the  country  along  the  line  of  the  southwestern  branch 
of  the  Pacific  Railroad,  State  of  Missouri,  by  G.  C.  Swallow.  St.  Louis,  1859, 
pp.  93,  with  map. 
Bli  Age  of  the  porphyry  hills  of  southeast  Missouri,  by  Edwin  Harrison.  Trans. 
St.  Louis  Acad.  Sci.,  vol.  2,  1868,  p.  504. 
57  Geology  of  Pilot  Knob  and  its  vicinity,  by  Raphael  Pumpelly.  Preliminary 
report  on  iron  ores  and  coal  fields  from  field  work  of  1872,  pt.  1,  1873,  pp.  3-28. 
58  Iron  ores  of  Missouri,  by  Adolph  Schmidt.     Idem,  pp.  45-214. 
59  Reports  on  the  geological   survey  of  the   State  of  Missouri,  1855-1871,   by 
B.  F.  Shumard.     Jefferson  City,  1873,  pp.  189-323. 
'"Madison  County,  by  G.  C.  Broadhead  and  J.  G.  Norwood.  Rept.  Geol.  Survey 
Missouri,  including  field  work  of  1873-74,  1874,  pp.  342-379,  with  an  atlas. 
"'  A  contribution  to  the  Archean  geology  of  Missouri,  by  Erasmus  Haworth. 
Am.  Geologist,  vol.  1,  1888,  pp.  280-297,  363-382. 
62 Based  on  unpublished  field  notes  of  C.  R.  Van  Hise  made  on  trip  with. 
Raphael  Pumpelly  in  the  summer  of  1890. 
03  The  age  and  origin  of  the  crystalline  rocks  of  Missouri,  by  Erasmus 
Haworth.     Bull.  Geol.  Survey  Missouri  No.  5,  pp.  5-42. 
04  The  iron  ores  of  Missouri,  by  Frank  L.  Nason.  Rept.  Geol.  Survey  Missouri, 
1891-92,  vol.  2,  1892,  pp.  16-69. 
65 The  geology  and  mineral  products  of  Missouri,  by  Arthur  Winslow.  Mis- 
souri at  the  World's  Fair  (official  publication  of  the  World's  Fair  Commission 
of  Missouri),  1893. 
86  Characteristics  of  the  Ozark  Mountains,  by  C.  R.  Keyes.  Rept.  Missouri 
Geol.  Survey,  vol.  8,  for  1894,  1895,  pp.  317-352. 
,;7  The  crystalline  rocks  of  Missouri,  by  Erasmus  Haworth.  Idem,  pp.  84-222, 
with  map  and  plates. 
^Report  on  the  Iron  Mountain  sheet— The  Archean  rocks,  by  Erasmus  Ha- 
worth. Rept.  Missouri  Geol.  Survey,  vol.  9,  1896,  pt.  3,  pp.  15-27,  with  sheet 
No.  3. 
69  Report  on  the  Mine  la  Motte  sheet — General  geology,  by  C.  R.  Keyes;  Ar- 
chean geology,  by  C.  R.  Keyes  and  E.  Haworth.  Idem,  pt.  4,  pp.  1  -44,  with 
sheet  No.  4. 
70  Geographic  relations  of  the  granites  and  porphyries  in  the  eastern  part  of 
the  Ozarks,  by  C.  R.  Keyes.  Bull.  Geol.  Soc.  America,  vol.  7,  1896,  pp.  363-376, 
pi.  17. 
71  Clay  deposits,  by  H.  A.  Wheeler — The  geological  occurrence  of  clays,  by 
C.  R.  Keyes.     Rept.  Missouri  Geol.  Survey,  vol.  9,  1896,  pp.  36-37. 
"Quarrying  industry  of  Missouri,  by  E.  R.  Buckley  and  H.  A.  Buehler.     Mis- 
souri Bur.  Geology  and  Mines,  2d  ser.,  vol.  2,  1904,  with  geological  map. 
"Notes  on  a  reconnaissance  of  the  Ouachita  Mountain  system  in  Indian  Ter- 
ritory, by  R.  T.  Hill.  Am.  Jour.  Sci.,  3d  ser.,  vol.  42,  1891,  pp.  11-124,  with 
sketch  map. 
74  Geology  of  Wichita  Mountains,  by  H.  Foster  Bain.  Bull.  Geol.  Soc.  America, 
vol.  11,  1900,  pp.  127-144,  pis.  15-17,  with  sketch  map. 
75  Preliminary  report -on  the  geology  of  the  Arbuckle  and  Wichita  mountains 
in   Indian   Territory   and   Oklahoma,   by    Joseph   A.   Taff.     Prof.    Paper   U.    S. 
