WAKMAN.]  SILURIAN.  731 
Silurian  rocks;  Ordovician  and  Cambrian,  relations  of,  in  New  York-Vermont 
slate  belt Ann  19,  m,  pp  290-297 
Panola  formation  of  Kentucky GF  46,  p  2;  GF  47,  p  2 
Parting  quartzite  of  Colorado,  Leadville  district Ann  2, 
pp  216,  218;  Mon  xn,  pp  61-62 
Pogonip  limestone  of  Nevada,  age,  character,  thickness,  etc.,  of Ann  3, 
pp  253,  260-262;  Mon  xix,  pp  48-54 
Quebec  group  of  Canada Bull  86,  pp  223,  224,  225,  231 
<  >f  Idaho Bull  81,  p  161 
of  Utah,  reference  to Bull  81,  p  159 
of  Wyoming Bull  81 ,  pp  212-214 
Rensselaer  gril  of  New  York Vnn  L3,  n.  pp  306-312,  333 
Richmond  shales  of  Kentucky  GF  46,  p  2 
Rockwood    formation  of  Alabama. ,  Georgia,    Maryland,    Tennessee.  Vir- 
ginia, and  West  Virginia GF  2, 
p  1;  GF  1,  p2;  GF6,  p  1;  GF8,  p  2;  GF  L2,  p2;  <iF14, 
pp  1.  2;  GF  L9,  p  2;  GF  20,  p  3;  GF  21,  p  2;  GF  25,  p 
4;  GF  26,  p  2;  GF  27,  p  3;  GF  28,  p  2;  GF  32,  p  3;  GF 
:;:;,  p2;  GF  35,  p  2;  GF  14.  p  3;  GF59,  p  4;  GF  61,  pp  3-4 
Rowe  schist  of  Connecticut  and  Massachusetts \Mon  xxix, 
pp  76-78;   Bull  L59,  p  84;  GF  50,  pp  2,  4 
St.  Peter  sandstone  of  Illinois,  altitude,  thickness,  etc,  of \nn  17, 
ii,  pp  794-705,  837-838 
of  Indiana Ann  11,  i,  pp  625-626 
of  Iowa Vnn  II,  i,  pp  330-331 
Salina  and  Monroe  beds  of  Michigan WS  .SO,  pp  88-89 
Sault  Ste.  Marie  sandstone Bull  86,  pp  55,  56,  57 
Savoy  schist  of  Massachusetts  and  ( !onnecticu1 Mon  xxix, 
pp  L56  L63, 220-221;  GF50,p2 
Sevier  shale  «•!'  Tennessee.  Virginia,  and  West  Virginia ...GF  L2, 
p  2;  GF  Hi.  i»  4;  GF  20,  p  3;  GF  25,  p  3;  GF 
26,  p  2;  GF  27,  p  3;  GF  44,  p  :!;  (IF  50,  p  :\ 
Shenandoah  limestone  of  ( latoctin  he  It Ann  14,  n,  pp  .">:;7  342 
of  Tennessee,  Virginia,  and  West  Virginia GF  14, 
pp  I,  2;  GF  26,  p  2:  GF  32,  p  2;  GF  59,  p  3;  GF  id,  p  2 
Sheridan  sandstone  of  Maine bull  lt;:>,  pp  47-49,  L32  -133 
Stockbridge  limestone  of  Massachusetts. Mon  XXXIII,  pp 
(54,  L81-  1S2,  L90;   Bull  86,  p  365,  passim;   Bull  159,  pp  84-85 
of  New  York Ann  L3,  n,  pp  301-303  333, 
Sylvania  sandstone  of  Ohio,  age  of Ann  8,  n,  p  565 
Tellico  sandstone  of  Tennessee  and  Virginia ..GF  16, 
p  4;  GF  20.  p  :5;  GF  25,  p  :!;  GF  27,  p  :!;  ( J F  59,  p4 
Three  Forks  shales  of  Montana,  description  and  sections  of Ann  20, 
in,  pp  289,  329,  363 
Trenton  limestone  in  Illinois,  thickness,  etc,  of Ann  17,  n,  pp  836-837 
in  Indiana Ann  11,  i,  pp  627-629,  648-651 
as  a  source  of  petroleum  and  inflammable  gas Ann  8,  n,  pp  475-662 
in  Iowa Ann  11,  i,  pp  329-330 
in  Michigan WS  30,  p90 
in  New  York-Vermont Ann  19,  in,  pp  190 
in  Ohio  as  a  source  of  petroleum  and  inflammable  gas.  .Ann  8,  n,  pp  475-662 
as  a  water  carrier Ann  19,  iv,  pp  639-641,  651-654 
Tuscarora  quartzite  of  Maryland,  Virginia,  and  West  Virginia GF  28, 
p  2;  GF  32,  p  2;  GF  61,  p  3 
