738  INDEX    TO    PUBLICATIONS    OF    U.    S.    GEOL.    SURVEY,     [bull.  177. 
Soda,  natural,  occurrence  and  utilization  of Bull  60,  pp  27-101 
Soda,  nitrate  of,  statistics  of MR  1882,  pp  599-600 
Soda,  sulphate  of.     (See  Sulphate  of  soda.) 
Soda  ash,  analyses  of MR  1883-84,  pp  965,  966 
Soda-feldspar  dikes  of  California,  Sonora  quadrangle,  description,  analyses, 
etc.,  of Ann  17,  i,  pp  663-667 
Soda-granite,  analysis  of,  from  California,  Bidwell  Bar  quadrangle.. Ann  17,  i,  p  721 
analysis  of,  from  California,  Merced  area Ann  17,  i,  p  721 
from  Minnesota,  Pigeon  Point Bull  109,  pp  56,  63; 
Bull  148,  p  107;  Bull  168,  p  77 
of  Minnesota,  Pigeon  Point Bull  109,  pp  49-59,  105-118 
of  Sierra  Nevada Ann  17,  i,  p  692 
Soda-granite-porphyry,  analysis  of,  from  California,  Mariposa  County Ann  17,  i, 
p  721 ;  Bull  148,  p  219;  Bull  168,  p  207 
Soda-granulite,  analysis  of,  from  California,  Bidwell  Bar  quadrangle.  .Ann  17,  i,  p  721 
analysis  of,  from  California,  Mariposa  County Ann  17,  i,  p  721;  Bull  148, 
p  219;  Bull  168,  p  207 
of  Sierra  Nevada. .    Ann  17,  i,  pp  550,  570-572 
Soda  Lakes  of  Nevada,  near  Ragtown Mon  xi,  pp  73-80 
Soda  salts,  analysis  of,  from  Wyoming,  Laramie Bull  60,  p  42;  MR  1885,  p  551 
Soda-syenite,  analysis  of,  from  California,  Plumas  County Ann  17,  i,  p  727 
of  California,  Sonora  quadrangle GF  41,  p  5 
Soda-syenite-granophyre,  of  California,  Mother  Lode  district GF  63,  p  5 
Soda-syenite-porphyry,  analysis  of,  from  California,  Tuolumne  County . Bull 
148,  p217;  Bull  168,  p  204 
analyses  of,  from  California,  various  localities Ann  17,  i,  p  727 
thin  section  of,  from  California,  Tuolumne  County Ann  17,  i,  pp  754-755 
Sodalite,  analysis  of,  from  Maine,  Litchfield Bull  42, 
p  30;  Bull  148,  p  66;  Bull  150,  p  204;  Bull  168,  p  22 
analysis  of,  from  Montana,  Highwood  Mountains Bull 
148,  p  155;  Bull  168,  p  134 
chemical  constitution  of Bull  125,  pp  22-23,  25,  30,  33,  102 
composition  of Bull  150,  p  32 
from  Litchfield,  Maine,  description  and  analysis  of Bull  42,  pp  30-31 
occurrence  of MR  1882,  p  498;  MR  1883-84,  p  773 
Sodalite-syenite,  analysis  of,  from  Montana,  Highwood  Mountains Mon  xxxn, 
ii,  p  354;  Bull  90,  p  70;  Bull  148,  p  154;  Bull  168,  p  133 
Sodium  and  potassium,  method  for  separation  of,  from  lithium  by  action  of 
amyl  alcohol  on  chlorides;  with  reference  to  similar  sep- 
aration of  same  from  magnesium  and  calcium . .  Bull  42,  pp  73-88 
Sodium  carbonate,  analysis  of,  from  Utah,  near  Great  Salt  Lake MR  1893,  p  733 
Sodium  salt,  analysis  of Bull  167,  pp  99,  143,  151 
Sodium  salts,  statistics  of MR  1887,  pp  651-658;  MR  1893,  pp  728-738 
Sodium  sulphate.     (See  Sulphate  of  soda. ) 
Soil,  analysis  of,  from  Bermuda,  and  of  coral  from  which  it  was  derived.  .Bull  52,  p  29 
analysis  of,  from  California,  Owens  Lake Bull  60,  p  93 
from  Hawaiian  Islands Bull  60,  p  164;  Bull  148,  p  301 
from  Kentucky,  Richmond  quadrangle GF  46,  p  4 
from  Massachusetts Bull  27,  pp  68-69 
Marthas  Vineyard Bull  148,  p  287;  Bull  168,  p  289 
from  Nevada,  Humboldt  City  (adobe) Ann  16, 
iv,  pp  562-563;  Bull  64,  p  51;  Bull  148,  p  300 
from  New  Mexico  (adobe) Ann  16, 
iv,  pp  562-563;  Bull  64,  p  51;  Bull  148,  p  299 
