warman.]  ALTITUDES AMPHIBOLITE.  135 
American  fossil  Bryozoa,  synopsis  of ,  including  bibliography  and  synonymy..  Bull  173 
American  River,  Calif ornia,  profile  of \yg  44  p  93 
Amesite,  analysis  of,  from  Massachusetts,  Chesterfield Bull  126^  p  15 
Amethyst,  occurrence  and  statistics  of MR  1882,  p  491;  MR  1883-84, 
pp  750-751,  781;  MR  1885,  p  443;  MR  1886,'  pp  596,  604; 
MR  1887,  pp  556,  557;  MR  1888,  pp  584  585;  MR  1889-90, 
pp  446,  147,  448;  MR  1891,  p  540;  MR  1892,  p  781; 
Ann  16,  iv,  pp  604,  605;  Ann  17,  in  cont,  pp  910,924; 
Ann  18,  v  cont,  pp  1205-1207,  1217;  Ann  19  vr,  cont,  p 
513;    Ann  20,  vi   cont,  p  599;  Ann  21,  vi  cont,  pp  453,  461 
Amherst  feldspathic  mica-schist  of  Massachusetts  and  Connecticut GF  50,  p  5 
Amidoheximidoheptaphosphoricacid,  constitution  and  salts  of... Bull  167,  pp  151-152 
Amidophosphoric  acid,  chemical  researches  on Bull  113,  pp  80-94 
Ammonia  liquor  and  sulphate  of  ammonia,  production  of Ann  20, 
vr  cont,  pp  227-228,232-239 
Ammonia  soda,  'analysis  of MR  1883-84,  p  965 
Ammonitidae  of  Chico-Tejon  series  of  California Bull  51,  pp  26-27 
of  Cretaceous  of  Vancouver  Island Bull  51  p  48 
of  Mesozoic  of  Alaska  Peninsula Bull  51,  pp  68-70 
of  New  Jersey  marls Mon  xvm,  pp  249-279 
Ammonium  chloride,  chemical  action  of,  on  silicates Bull  113,  pp  34-36 
Ammonoidea  from  ( iolorado  formation Bull  106,  pp  164-189 
iVoiii  Cretaceous  of  Pacific  coast *. Bull  133,  pp  72-83 
Amniosaiirns,  description  of Ann  16,  1,  p  150 
Ampelidacese  from  Dakota  group Mon  xvn,  pp  159-165 
Ampelidese  from   1. a  ramie  -roup Bull  37,  pp  69-72 
Amphibole,  analysis  of,  from  California,  various  localities.. Bull  168,  pp  190,206,208 
analysis  of,  from  ( Iolorado,  Lead  vi  lie  district Mon  xn,  p  598 
from  Montana,  Walkerville  station Bull  168, p  116 
chemical  constitution  of Bull  125,  pp  90-94,  106 
composition* of Bull  150,  pp  41-42 
Amphibole-biotite-granite,  analysis  of,  from  California,  Mariposa  County Bull 
168,  p  208 
Amphibole-gabbro,  analysis  of,  from  California,  Tuolumne  County. .  .Bull  168,  p  206 
Amphibole-granite,  thin  section  of,  from  Michigan,  near Negaunee Bull  62, 
pp  238-239 
Amphibole-granitite,  analysis  of,  from  Germany,  Hohwald Mon  xxviii,  p  202 
Amphibole-schist,  analysis  of,  from  California,  Bidwell  Bar  quandrangle Ann 
17,  1,  p579 
Amphibole-schists  of  Michigan,  Crystal  Falls  district Mon  xxxvi,  pp  465-467 
of  Michigan,  Marquette  district Mon  xxvni,  pp  206-208 
of  Oregon,  Roseburg  quadrangle GF  49,  p  2 
of  Sierra  Nevada Ann  17, 1,  pp  578-579 
Amphibolite,  analysis  of,  from  California,  various  localities Ann  14,  n,  pp  259,  275; 
Bull  148,  p  211;  Bull  168,  p  197 
analysisof,  from  Massachusetts,  various  localities.. Mon xxix,  ppl67, 168, 196,303; 
Bull  148,  pp  75,  76;  Bull  168,  pp  31,  32 
from  Michigan,  Feleh  Mountain  and  Crystal  Falls  districts Mon  xxxvi, 
p  397;  Bull  168,  p  66 
from  Vermont,  Guilford Mon  xxix, 
pp  196,  303;  Bull  148,  p  71;  Bull  168,  p  27 
of  California,  Bidwell  Bar  quadrangle GF  43,  p  3 
Big  Trees  quadrangle GF  51,  p  5 
Colfax  quadrangle GF  66,  p  3 
