warman.]  GYPSUM HASSAYAMPA.  367 
Hallock  (W.),  preliminary  note  on  coefficients  of  thermal  expansion  of  cer- 
tain rocks Bull  78,  pp  109-118 
specific  gravity  of  lampblack Bull  42,  pp  132-135 
Hall< >pus,  description  of Ann  16,  i,  pp  153-155;  Mon  x xvn,  pp  481-483 
Hallopus  beds  in  Denver  Basin Ann  16,  i,  p  153;  Mon  xxvn,  p  475 
Halloysite,  analysis  of,  from  California,  near  Mono  Lake Bull  9,  p  13 
analysis  of,  from  Nevada,  Elko  County Bull  148,  p  300;  Bull  168,  p  303 
from  North  Carolina,  Chatham  County Bull  74,  p  64 
chemical  constitution  of Bull  125,  pp66,  104 
Halotrichite,  analysis  of,  from  New  Mexico,  Grant  County Bull  9,  p  14 
Hamamelidacese  of  Alaska Ann  17,  i,  ]  >  888 
of  North  America,  extinct Mon  xxxv,  pp  100-102 
Hamamelideae  of  Dakota  group Mon  xvn,  pp  139-141 
oil  .aramie  group Bull  37,  p  64 
Hamburg  limestone  and  shale  of  Eureka,  Nevada.  .Ann  3,  pp  253-256;  Mon  vn,  pp  7-8; 
Mon  xx,  pp  39-41;  Bull  81,  pp  246,  315-316 
I  [amilton  formation  of  Indiana Ann  11,  i,  p  636 
Hamilton  quadrangle,  Montana-Idaho,  foresl  conditions  in Ann  21,  v,  p  596 
Hampden  diabase  of  Massachusetts  and  Connecticut OF  50,  p6 
Hampshire  formation  of  Maryland (IF  28,  p  3 
of  Virginia GF  14,  p  2;  GF  32,  p  3;  GF  61,  p  \ 
of  West  Virginia.... GF  14,  p  2;  GF  28,  p  3;  GF  32,  p  3;  GF34,  p  2;  GF  61,  p  4 
Hampshire,  Hampden,  and  Franklin  counties,  Massachusetts,  geology  of.  .Mon  xxix 
mineral  lexicon  of Mon  \  \i  \,  pp  754-761;  Bull  126 
Ilampson  (T. ),  death  and  biographic  sketch  of Ann  9,  pp  44-46 
rules  for  preparation  of  manuscript See  p  113  of  this  bulletin 
Hampton  shale  of  Virginia  and  Tennessee GF  59,  p  3 
Hanbury  slate  of  Michigan,  Menominee  district GF  62,  pp  10-11 
Hancock  limestone  of  Kentucky GF  12,  p  2;  GF  27,  p  3 
of  Virginia  and  Tennessee (I F  1 2,  p  L';  GF  27, p  3;  GF  59,  p  4 
Harbors,  geologic  history  of Ann  13,  n,  pp  93-209 
nature  and  origin  of inn  13,  n,  pp  105-134 
of  North  America,  review  of Ann  13,  n,  pp  160-206 
Harding  sandstone  of  Colorado GF  7,  pp  2,4;  GF  36,  p  2 
Hardistonville  quartzite  of  northern  New  Jersey Ann  18,  n,  pp  442-443,  454-456 
Hardwick  gneiss  or  granite  of  western  Massachusetts Mon  xxix,  pp  239-241 
Har'ian  sandstone  of  Kentucky,  Virginia,  and  Tennessee Bull  111, 
pp  31-33;  GF  12,  p  3 
Harmotome,  analysis  of Bull  125,  p  41 
chemical  constitution  of Bull  125,  pp  41, 42, 102 
Harpers  Ferry  quadrangle,  Virginia-Maryland-West  Virginia,  geology  of GF  10 
Harpers  shale  in  Catoctin  belt Ann  14,  n,  pp  333-335 
in  Virginia,  Maryland,  and  West  Virginia GF  10,  p  3 
Harris  (G.  D. )  and  Dall  (W,  H.),  Neocene  of  North  America,  a  correlation 
essay Bull  84s 
Harrisburg  quadrangle,  Pennsylvania,  physiography  of TF  2,  p  8 
Harroun  (P.  E.) ,  Rio  Grande  Valley,  near  Albuquerque,  irrigation  in Bull  140, 
pp  180-186 
Harstigite,  chemical  composition  of Bull  102,  pp  64, 103 
Hartshorne  sandstone  of  Indian  Territory Ann  19, 
in,  pp  436,  441;  Ann  21,  n,  pp  274-275 
Hartt  collection  at  Cornell,  fauna  of  St.  John  formation  in Bull  10,  pp  9-42 
Hassayampa  disaster,  Arizona  (Feb.  22, 1890) ,  causes  of Ann  11, 
ii,  pp  228-229;  Ann  13,  in,  pp  297-302 
