warman.]  HINSDALE HORNBLENDE.  373 
Hoosac  Mountain,  literature  of  geology  of Bull  86,  pp  361,  363,  371-373 
Hoosac  Mountain  and  adjacent  territory,  geology  of Mon  xxiii,  pp  35-118 
1 1 1  ><  >sac  schist  in  Connecticut GF  50,  pp  1-2,  4 
in  Hoosac  Mountain Mon  xxm,  pp  59-63 
in  Massachusetts Mon  xxix,  pp  66-75;  Bull  159,  pp  81-83;  GF  50,  pp  1-2,  4 
Hoosac  tunnel,  rock  formations  observed  in Mon  xxiii,  pp  69-72, 108 
Hope  Valley,  Nevada,  engineering  plans  and  estimates  for  reservoir  in Ann  13, 
in,  pp  395-397 
irrigation  surveys  in Ann  11,  n,  pp  180-181 
Hopkins  (T.  C. ),  brownstones  of  Pennsylvania — properties,  chemical  composi- 
tion, structural  and  textural  features,  occurrence,  use, 
etc Ann  18,  v  cont,  pp  1025-1043 
sandstones  of  western  Indiana Ann  17,  in  cont,  pp  780-787 
1 1< »pkins  (T.  C. )  and  Siebenthal  (C.  E. ),  Bedford  oolitic  limestone Ann  18, 
v  cont,  pp  1050-1059 
Hornblende  a  product  of  mineralogic  metamorphism Bull  62,  p  210 
alteration  of,  during  metamorphism  of  massive  rocks Bull  62,  p  216 
analysis  of,  from  District  of  Columbia Bull  27,  p  62 
from  California,  <  rrass  Valley Ann  17,  n,  p  43 
from  Maryland,  Gwynns  Falls  (  fibrous) Bull  28,  p  44 
from  Montana,  Highwood  Mountains Bull  90,  p  70; 
Bull  L48,p  L55;  Bull  168,  p  134 
from  New  York,  Pierrepont Bull  78,  p  119 
"black  border"  of,  in  igneous  rocks Mon  in,  pp  59-61 
chemical  constitution  of Bull  125,  p  91 
in  diorite,  from  Wyoming,  Electric  Peak Ann  12,  i,  pp  606-608 
in  gneisses  of  Minnesota,  southwestern Bull  157,  pp  55-57 
in  porphyrite,  from  Wyoming,  Electric  Peak Ann  12,  i,  pp  592-593 
in  porphyritic  diorite,  from  Nevada,  Washoe  district,  passing  into  chlo- 
rite  Mon  in,  pp  150-151 
in  rocks  of  Pacific  slope Mon  xm,  pp  75-76 
thin  section  of,  from  Delaware,  illustrating  alteration  of  diallage  into  com- 
I  tact  green  hornblende Bull  59,  p  26 
from   Delaware,  illustrating  alteration  of  fibrous  into  compact  green 
hornblende Bull  59,  p  29 
illustrating  alteration  of  hypersthene  into  tremolite  and  fibrous 
green  hornblende Bull  59,  | »  23 
froniMichigan,  Lower Quinnepec Falls  (in  porphyrite-diorite) . .  .Bull  62,  p  79 
Menominee  region,  showing  cores  of  hornblende  surrounded  by 
fibrous  border Bull  62,  p  126 
Sturgeon  Falls  (around  diallage  in  gabbro) Bull  62,  p  70 
T.  48  N.,  R.  26  W.,  sec.  4  (crystal) Bull  62,  p  183 
from  Minnesota,  Pigeon  Point  (fibrous  green) Bull  109,  pp  40-41 
Pigeon  Point  (pseudamygdule  in  altered  gabbro) Bull  109,  pp  42-43 
from  Nevada,  Silver  City  (from  hornblendic  andesite) Mon  in,  pp  150-151 
Washoe  district  (from  metamorphic  diorite) Mon  in,  pp  150-151 
(passing  into  chlorite,  from  hornblende-andesite) Mon  in, 
pp  150-151 
Hornblende  phenocrysts,  thin  section  of,  from  Nevada,  Eureka  district Mon  xx, 
pp  404-405 
Hornblende  rocks  of  Colorado,  Telluride  quadrangle GF  57,  p  7 
of  Maryland,  near  Baltimore,  gabbros  and  associated Bull  28 
Hornblende  and  augite  intergrown,  analysis  of,  from  Colorado,  Blue  Moun- 
tains   Ann  17,  n,  p  278 
Hornblende  and  partly  altered  hypersthene  from  andesitic  perlite  from  Nevada, 
Eureka  district Mon  xx,  pp  396-397 
