750  PRE-CAMBRIAN    GEOLOGY    OF    NORTH   AMERICA. 
10  The  Baraboo  quartzite  ranges,  by  R.  D.  Irving.  Geology  of  Wisconsin,  vol. 
2,  1873-1877,  pp.  504-519. 
11  Some  dynamic  phenomena  shown  by  the  Baraboo  ranges  of  central  Wiscon- 
sin, by  C.  R.  Van  Hise.     Jour.  Geology,  vol.  1,  1893,  pp.  347-355. 
12  On  the  quartz  keratophyre  and  associated  rocks  of  the  north  range  of  the 
Baraboo  Bluffs,  by  Samuel  Weidman.  Bull.  Univ.  Wisconsin,  sci.  ser.,  vol.  1, 
1895,  pp.  35-50,  pis.  1-3. 
"Baraboo  iron-bearing  district  of  Wisconsin,  by  Samuel  Weidman.  Bull. 
Wisconsin  Geol.  and  Nat.  Hist.  Survey  No.  13,  1904,  pp.  190,  with  map. 
"Note  on  the  age  of  the  metamorphic  rocks  of  Portland,  Dodge  County.  Wis., 
by  R.  D.  Irving.     Am.  Jour.  Sci.,  3d  ser.,  vol.  5,  1873,  pp.  282-286. 
15  Geology  of  the  Waterloo  quartzite  area,  by  I.  M.  Buell.  Trans.  Wisconsin 
Acad.  Sci.,  vol.  9,  1892,  pp.  255-274. 
16  Unpublished  bachelor's  thesis,  Dept.  Geology,  Univ.  Wisconsin,  1904. 
17  The  Marcellon,  Observatory  Hill,  Moundville,  Pine  Bluff,  Marquette,  and 
Berlin  quartz  porphyries  and  the  Montello  granite  and  Marion  granite  areas,  by 
R.  D.  Irving.    Geology  of  Wisconsin,  vol.  2,  1873-1877,  pp.  519-523. 
18  Geology  of  eastern  Wisconsin,  by  T.  C.  Chamberlin.  Idem,  pp.  93-405,  with 
3  atlas  maps. 
19  Unpublished  thesis,  by  W.  W.  Pretts,  Geol.  Dept.  Univ.  Wisconsin,  1895. 
20  Unpublished  thesis,  by  C.  K.  Leith,  Geol.  Dept.  Univ.  Wisconsin,  1897.  MS. 
notes,  unpublished,  by  Wm.  II.  Hobbs  and  C.  K.  Leith,  1898-99. 
21A  contribution  to  the  geology  of  the  pre-Cambrian  rocks  of  the  Fox  River 
valley,  Wisconsin,  by  Samuel  Weidman.  Bull.  Wisconsin  Geol.  and  Nat.  Hist. 
Survey  No.  3,  1898,  pp.  63. 
22  The  iron  ores  of  Wisconsin,  by  Edward  Daniels.  Ann.  Rept.  Geol.  Survey 
Wisconsin  for  1857,  pp.  62. 
23  Physical  geography  and  general  geology,  by  lames  Hall.  Rept.  Geol.  Sur- 
vey Wisconsin,  vol.  1,  1862,  p.  11. 
24  Report  on  the  geological  survey  of  the  mineral  regions,  by  John  Murrish. 
Trans.  Wisconsin  Agr.  Soc,  1872-73,  pp.  469-494. 
25  The  Necedah  quartzite,  by  R.  D.  Irving.  Geology  of  Wisconsin,  vol.  2, 
1873-77,  pp.  523-524. 
26  Unpublished  thesis,  by  E.  T.  Hancock,  Geol.  Dept.  Univ.  Wisconsin,  1001. 
27  Sketch  of  the  geology  of  northeastern  Dakota,  with  a  notice  of  a  short  visit 
to  the  celebrated  Pipestone  quarry,  by  F.  V.  Hayden.  Am.  Jour.  Sci.,  2d  ser., 
vol.  43,  1867,  pp.  15-22. 
28  Fossils  from  the  red  quartzite  at  Pipestone,  by  N.  H.  Winchell.  Thirteenth 
Ann.  Rept.  Geol.  and  Nat.  Hist.  Survey  Minnesota  for  1884,  pp.  (55-72. 
29  Notes  on  the  geology  of  Minnehaha  County,  Dakota,  by  Warren  Upham. 
Idem,  pp.  88-97. 
30  The  spotted  slates  associated  with  the  Sioux  quartzite,  by  S.  W.  Beyer. 
Johns  Hopkins  Univ.,  Circ.  No.  121,  1895,  p.  10. 
31  Opinions  concerning  the  age  of  the  Sioux  quartzite,  by  C.  R.  Keyes.  Proc. 
Iowa  Acad.  Sci.  for  1894,  vol.  2,  1895,  pp.  218-222. 
32Artesian  wells  of  Iowa,  by  W.  H.  Norton.  Geol,  Survey  Iowa.  vol.  6.  1897 
(The  Algonkian,  pp.  139-140). 
33  The  Sioux  quartzite  and  certain  associated  rocks,  by  S.  W.  Beyer.  Idem, 
pp.  69-112. 
34  Geology  of  Lyon  County,  by  Frank  A.  Wilder.  Iowa  Geol.  Survey,  vol.  10, 
1899,  pp.  96-108. 
35  The  newly  discovered  rock  at  Sioux  Falls,  S.  Dak.,  by  J.  E.  Todd.  Am. 
Geologist,  vol.  33,  1904,  pp.  35-39. 
