660  INDEX    TO    PUBLICATIONS    OF    U.   S.    GEOL.    SURVEY,     [bull.  177. 
Road  material  in  Massachusetts,  use  of  trap  as Mon  xxix,  pp  500-501 
in  Massachusetts  and  other  parts  of  United  States Ann  16,  n,  pp  277-341 
in  Oregon,  use  of  basalt  as Ann  17,  i,  pp  514-515 
in  Virginia,  Richmond  Basin,  dikes  suitable  for Ann  19,  n,  p  501 
resistance  to  wear  of,  statistics  concerning Ann  16,  n,  pp  328-341 
sources  of  supply  of Ann  15,  pp  288-305 
testing,  method  of Ann  16,  n,  pp  285-290 
Roads,  action  of  rain,  frost,  and  wind  on Ann  15,  pp  281-283 
1  tlock  pavements  and  paving  brick  for Ann  15,  pp  278-281 
grade  of,  effect  of  geologic  structure  on Ann  15,  pp  283-288 
history  of  American,  outline  of « Ann  15,  pp  262-266 
of  United  States,  geology  of Ann  15,  pp  255-306 
Roads,  geologic  conditions,  and  civilization,  connection  between Ann  15, 
pp  260-261 
Roanoke  River,  flow  of,  measurements  of Ann  18, 
iv,  pp  42,  47-50;  Ann  19,  iv,  pp  181-182;  Ann  20,  iv,  pp 
50, 140-142;  Ann  21,  iv,  pp  109-111;  WS  11,  pp  11, 13-15; 
WS  15,  pp  25,  28;  WS  27,  pp  32,  44;  WS  35,  pp  107-109 
profile  of WS  44,  pp  23-24 
rainfall  and  run-off  in  basin  of Ann  20,  iv,  pp  137-139 
water  powers  in  basin  of Ann  19,  iv,  pp  174-178 
Roaring  Creek  coal  field  in  West  Virginia Ann  14,  u,  pp  588-590 
Robinson  formation  in  California Ann  14,  n,  pp 
447-448;  Ann  17,  i,  pp  626-628;  GF  15,  p  1;  GF  31,  p  1;  GF 
37,  ppl,3;  GF39,  pi;  GF  41,  pi;  GF  43,  pi;  GF51,pl 
Robinson  diorite  in  Montana,  Little  Belt  Mountains  quadrangle GF  56,  p  4 
Robinson  quartzite  of  Utah Ann  19,  in,  pp  620-622 
Rock,  analysis  of,  from  Montana,  Cottonwood  Creek Bull  60,  p  154 
analysis  of,  from  New  York,  Adirondacks  (dark  basic) Ann  19,  in,  p  404 
thin  section  of,  from  Michigan,  SW.  \  sec.  32,  T.  48  N.,  R.  29  W.,  f rag- 
mental  from  Clarksburg  formation Mon  xxvm,  pp  470-471 
Rock,  dike.     (See  Dike  rock.) 
Rock,  wall  (see  Wall  rock) . 
Rock  Creek,  District  of  Columbia,  flow  of,  measurements  of WS  15,  p  22; 
WS  27,  pp  22,  24;  WS  35,  pp  94-95 
Rock  Creek,  Nevada,  flow  of,  measurements  of.  .Ann  18,  iv,  pp  308-310;  WS  11,  p  75 
water  storage  on Ann  20,  iv,  pp  441-447 
Rock-forming  minerals,  chemical  constitution  of Bull  125 
principal Bull  150,  pp  27-47 
Rock  names,  glossary  of Ann  17,  i,  pp  736-740; 
GF  3,  p  2;  GF  5,  p  2;  GF  11,  p  2;  GF  18,  p  2;  GF  31,  p  2; 
GF  37,  p  2;  GF  39,  p  2;  GF  41,  p  2;  GF  43,  p  2;  GF  51,  p  2 
Rock  phosphates,  classes,  nature,  and  localities  of Bull  46,  pp  59-116 
(See,  also,  Phosphates.) 
Rock  River,  Illinois,  profile  of WS  44,  p  60 
Rock-scorings  of  the  great  ice  invasions Ann  7,  pp  147-248 
Rock  saturation,  nature  of Ann  21,  vn,  pp  388-389 
Rock  specimens,  educational  series  of Bull  150 
Rock  structures,  importance  of  understanding  significance  of Bull  62,  p  196 
produced  by  dynamic  action Bull  62,  pp  206-208 
Rock  temperatures  of  Nevada,  Comstoek  lode Mon  in,  pp  246-258 
Rockcastle  conglomerate  lentil  in  Kentucky GF  46,  p  3;  GF  47,  p  2 
in  Tennessee GF  53,  p  3 
Rockingham  group  of  rocks  in  New  Hampshire Bull  86,  pp  353-355 
