370  INDEX    TO    PUBLICATIONS    OF    U.    S.    GEOL.    SURVEY,     [bull.  177. 
Hessite,  analysis  of,  from  Mexico,  San  Sebastian Bull  167,  p  63 
Hetch  Hetchy  Reservoir,  California,  discussion  of Ann  21 ,  i v,  pp  450-465 
Heulandite,  analysis  of,  from  Colorado,  Gunnison  County Bull  90,  p  62 
chemical  constitution  of. Bull  125,  pp  33,  40-41,  44, 102 
Hewitt  (G.  C. ),  coal  fields  of  Wyoming MR  1893,  pp  412-414 
Hexacoralla  from  Eocene  of  Middle  Atlantic  slope Bull  141,  pp  89-91 
Hexametaphosphimate,  silver,  analysis  of Bull  167,  p  150 
Hexametaphosphimate,  sodium,  analysis  of Bull  167,  p  149 
Hexametaphosphimic  acid,  constitution,  salts,   decomposition  products,  etc., 
of Bull  167,  pp  149-151 
Hexaphosphonitrilic  chloride,  analysis  of Bull  167,  p  132 
Hickman  group  of  Kentucky Bull  83,  pp  71-72;  Bull  84,  p  326 
Hickory  series  of  Texas,  origin  of  name Bull  81,  p  246 
Hidden  (W.  E.),  discovery  of  emeralds  in  North  Carolina MR  1882,  pp  500-502 
hiddenite,  the  new  emerald-green  gem MR  1882,  pp  502-503 
Hiddenite,  analysis  of,  from  North  Carolina,  Alexander  County Bull  74,  p  44; 
MR  1882,  p  503 
occurrence  and  statistics  of MR  1883-84,  p  748;    MR  1885,  pp 
437-438,443;  MR  1886,  p  604;  MR  1887,  pp  556,557,560; 
MR  1888,  pp  584,585;  MR  1889-90,  pp  446,447;  MR  1891, 
p539;  MR  1892,  p  781 ;  MR  1893,  p  681;  Ann  16,  iv,  p  604 
High  Park  lake  beds  and  grits,  Colorado,  description  and  relations  of Ann  16, 
ii,  pp  53-55, 107, 109 
High  Plains  and  their  utilization Ann  21,  iv,  pp  601-741 
climate  of,  deficiencies  of Ann  21,  iv,  pp  657-679 
rainfall  of Ann  21,  iv,  pp  658-669 
( See,  also,  Great  Plains. ) 
Highbridge  limestone  of  Kentucky  GF  46,  p  2 
Highland  Rim,  west  of  Cumberland  Plateau,  description  of Ann  19,  n,  pp  13-14 
Highlands  of  New  Jersey  and  New  York,  literature  of  geology  of Bull  86, 
pp  386,  387,  390,  391,  392,  396,  399,  400,  401,  402,  413,  414,  415 
Highline  irrigation  canal,  Colorado '. Ann  13,  in,  pp  179-181 
Highways.     (See  Roads.) 
Highwood  Mountains,  Montana,  structure  and  igneous  rocks  of GF  55,  pp  1,  3 
High  wood  syenite  of  Montana,  Fort  Benton  quadrangle GF  55,  p  3 
Hilgard  (E.  W. ),  asphaltum  deposits  of  California MR  1883-84,  pp  938-948 
salines  of  Louisiana MR  1882,  pp  554-565 
Hill  (R.  T. ) ,  clay  materials  of  the  United  States MR  1891, 
pp  474-528;  MR  1892,  pp  712-738;  MR  1893,  pp  603-617 
coal  fields  of  Texas MR  1891,  pp  326-328;  MR  1892,  pp  507-510 
geography  and  geology  of  Black  and  ( I  rand  prairies,  Texas Ann  21,  vn 
mineral  resources  of  Porto  Rico Ann  20,  vi  cont,  pp  771-778 
physical  geography  of  Texas  region TF  3 
present  condition  of  knowledge  of  geology  of  Texas Bull  45 
work  in  charge  of,  1893-1900 Ann  15,  pp  170-171 ;  Ann  16, 
i,  pp  27-28;  Ann  17,  i,  pp  34-37;  Ann  18,  i,  pp  35-37; 
Ann  19,  i,  pp  38-39;  Ann  20,  i,  pp  42,  55;  Ann  21,  i,  p  76 
work  of,  in  Porto  Rico Ann  20,  i,  p  55 
Hill  (R.  T.)  and  Vaughan  (T.  W.),  geology  of  Edwards  Plateau  and  Rio 
Grande  Plain  adjacent  to  Austin  and  San  Antonio,  Texas, 
with  reference  to  underground  waters  ...Ann  18,  n,  pp  193-321 
geology  of  Texas,  Nueces  quadrangle GF  42 
lower  Cretaceous  gryphseas  of  Texas  region , . . . . , Bull  151 
