378  INDEX    TO    PUBLICATIONS    OF    U.    8.    GEOL.    SURVEY,     [bull.  177. 
Humidity  as  a  disturbing  factor  in  barometric  hypsometry Ann  2,  pp  425-427 
is  it  increased  by  irrigation  ? Ann  12,  n,  p  234 
Humite,  chemical  constitution  of Bull  125,  pp  69,  104 
Hungary.     (See  Austria-Hungary.) 
Hunt  (A.  E. ),  aluminum,  manufacture  of,  in  Europe Ann  17,  in,  pp  245-251 
aluminum,  statistics  of MR  1892,  pp  227-254 
Hunt  (T.  S. ),  system  of  classification  for  pre-Paleozoic  groups... Ann  7,  pp  381-389; 
Bull  86,  pp  462-466 
Huntington  quadrangle,  West  Virginia-Ohio,  geology  of GF  69 
Huntley  (D.  B. ),  list  of  ores,  minerals,  and  mineral  substances  of  industrial 
importance  in  Arizona  and  Utah..  MR  1882,  pp  760-764,  773-775 
mining  districts  of  Arizona MR  1882,  pp  765-766 
Huronian,  definition  of Bull  86,  p  463 
Huronian  district,  the  original,  Lake  Superior  region,  succession,  correlation, 
etc.,  in Ann  3,  pp  141,  157-163;   Ann 
16,  i,  pp  775-780;  Bull  86,  pp  23-50,  498^99 
Huronian  quartzites,  genesis  of  and  metamorphism  in Ann  5, 
pp  236-237;  Bull  8,  pp  48-52 
Huronian  rocks,  enlargements  in Bull  8,  pp  23-37 
of  Great  Lakes  region Ann  3,  pp  163-168; 
Ann  5,  pp  189-194;  Ann  10,  i,  p  318;  Ann  15,  p  647;  Ann  19, 
in,  pp  10-14,  34-80, 121-122;  Ann  21,  m,  pp  354-360;  Mon  v, 
pp  386-394,  402-409;  Mon  xix,  passim;  Mon  xxviii,  passim; 
Mon  xxxvi,  pp  xviii-xxiv,  50-186;  Bull  86,  passim;  GF  62 
of  Northwestern  States,  metamorphism  in Ann  5,  pp  241-242 
the  original Ann  3,  pp  141, 157-163; 
Ann  16,  i,  p  775;  Bull  86,  pp  23-50,  498-499 
(See,  also,  Algonkian  rocks.) 
Huronian  system,  history  of  term Bull  86,  pp  470-474 
Huronian  and  Lauren  tian  rocks,  relations  of  Kevveenawan  rocks  to Ann  3, 
pp  156-173 
relations  of  Penokee  iron-bearing  series  to Ann  10,  i,  pp  458-464 
Hutson  ( W.  F. ) ,  irrigation  systems  of  Texas WS  13 
Hyalite,  occurrence  of MR  1883-84,  p  761;  MR  1891,  p  550;  Ann  16,  iv,  p  603 
Hyalotekite,  analysis  of ? Bull  125,  p  99 
chemical  constitution  of " Bull  125,  pp  98-99, 106 
Hyatt  ( A. ),  report  on  Mesozoic  fossils  from  Alaska Ann  17,  i,  pp  907-908 
work  in  charge  of,  1889-1892,  1895-1897.  .Ann  11,  i,  pp  97-100;  Ann  12,  i,  pp  111- 
112;  Ann  13,  i,  pp  142-143;  Ann  17,  i,  p  m;  Ann   18,  i,  p  68 
Hydraulic-cement  rock,  analysis  of,  from  New  York,  Akron Bull  168,  p  253 
Hydrobiotite,  chemical  constitution  of Bull  125,  p  49 
Hydrocarbons,  chemical  relations  between Ann  17,  i,  p  918 
comparative  occurrence  of  related Ann  1 7,  i,  pp  938-942 
Hydrocarbons  and  allied  substances,  classification  of Ann  17,  i,  pp  916-917 
Hydrocastorite,  analyses  of Bull  125,  p  97 
chemical  constitution  of Bull  125,  p  97 
Hydroclintonite,  chemical  constitution  of Bull  125,  p  49 
Hydrogen    peroxide,  fluoriferous,    warning    against     use   of,    in    estimating 
titanium Bull  167,  p  56 
Hydrogen  sulphide  in  natural  gas  of  Point  Abino,  Canada.  .Ann  19,  vi  cont,  pp  184-185 
Hydrography;  Austin  dam,  construction  and  destruction  of WS  40 
dams  on  James  River,  description  of Ann  19,  iv,  pp  164-170 
discharge  of  western  rivers,  tables  of Ann  13,  in,  pp  92-99 
floods  in  New  York,  Chemung  River .  WS  24,  pp  87-90 
on  Lower  Mississippi  River,  discussion  of Ann  20,  iv,  pp  347-352 
