198  INDEX    TO    PUBLICATIONS    OF    U.    S.    GEOL.    SURVEY,     [bull.  177. 
Canada;  Cambrian  rocks  in,  investigations  of .Bull  81, 
pp  56-67,  80-88,  262-267,  285-287,  326,  334,  380,  382 
cement  production  of MR  1892,  p  743 
chromic  iron  in,  occurrence,  character,  use,  etc.,  of Ann  17,  in,  pp  261-273 
clay  production  of,  at  Paris  Exposition  of  1900 Ann  21,  vi  cont,  p  374 
coal  production  of,  statistics  of MR  1882,  p  5;  MR  1885,  p  11;  MR  1886, 
p  235;  MR  1887,  p  189;  MR  1891,  p  73;  MR  1892,  p  270; 
MR  1893,  p  202;  Ann  16,  in,  pp246,  248,  iv,  21;  Ann  17,  in, 
pp  314,  320;  Ann  18,  v,  pp  132,  136,  414,  420;  Ann  19,  vi,  pp 
311,  318;  Ann  20,  vi,  pp  332,  339;  Ann  21,  vi,  pp  113,  363,  371 
copper  production  of,  statistics  of MR  1882,  p  257;  MR  1883-84, 
pp  356,  373;  MR  1885,  p  229;  MR  1886,  p  128;  MR  1887, 
pp  87,  97;  MR  1888,  p  73;  MR  1891,  p  101;  MR  1892, 
p  114;  MR  1893,  p  86;  Ann  16,  in,  p  352;  Ann  17,  in, 
pp  117,  119;  Ann  18,  v,  pp  219,  221;  Ann  19,  vi,  pp  176, 
178;  Ann  20,  vi,  pp  202,  204;  Ann  21,  vi,  pp  204,  206,  222 
corundum  production  of Ann  21,  vi  cont,  pp  437-441 
elevations  in,  and  in  Northwest  Territories Bull  6;  Bull  72 
fossil  plants  of,  literature  of Ann  8,  n,  pp  842-848 
geologic  maps  of,  list  of Bull  7,  pp  39-51 
(See,  also,  Map,  geologic,  of  Canada. ) 
gold  fields  of Ann  Hi,  in,  pp  320-329 
gold  production  of,  compared  with  that  of  other  countries. MR  1883-84, 
pp  319,  320 
graphite  production  of Ann  19,  vi  cont, 
pp  629-630;  Ann  20,  vi  cont,  p  718;  Ann  21,  vi  cont,  p  568 
grindstone  statistics  of Ann  18,  v  cont,  p  1224;  Ann  19,  vi  cont, 
p  520;  Ann  20,  vi  cont,  p  612;  Ann  21,  vi  cont,  p  471 
gypsum  deposits  and  production  of,  statistics  of MR  1883-84, 
p  809;  MR  1885,  pp  459-460;  MR  1887,  pp  602,  603; 
MR  1893,  p  716;  Ann  16,  iv,  p  666;  Ann  17,  in  cont, 
pp  982-983;  Ann  18,  v  cont,  p  1269;  Ann  19,  vi  cont, 
pp  584,  585;  Ann  20,  vi  cont,  p  665;  Ann  21,  vi  cont 
iron,  iron  ore,  and  steel  from,  statistics  of Ann  16,  in,  pp  23,  28,  44-54,  246- 
247,  248;  Ann  18,  v,  pp  133-135,  136,  137;  Ann  19,  vi, 
pp  83,  89;  Ann  20,  vi,  pp  99-101;  Ann  21,  vi,  pp  113,  114 
iron  trade  of,  progress  of Ann  21,  vi,  pp  111-112 
Lake  Agassiz,  the  glacial Mon  xxv 
Lake  Superior  region,  iron-ore  formations  of Ann  21 ,  in,  pp  409-412 
lead  production  of,  statistics  of Ann  18,  v,  pp  257,  262;  Ann  19,  vi, 
pp  201,  215,  220;  Ann  20,  vi,  p  246;  Ann  21,  vi,  pp  245,  246 
manganese  deposits  and  production  of,  statistics  of MR  1883-84, 
p  554;  MR  1885,  pp  350-356;  MR  1886,  p  198;  MR  1887, 
pp  153-154;  MR  1888,  pp  133-136;  MR  1889-90,  p  130;  MR 
1892,  p  216;  MR  1893,  pp  136-137,  155;  Ann  16,  in,  pp  435- 
439,  457;  Ann  17,  in,  pp  205-207,  224;  Ann  18,  v,  pp  311, 
328;  Ann  20,  vi,  pp  138-139, 156;  Ann  21,  vi,  pp  144-146, 162 
mica  production  of Ann  19,  vi  cont,  p  621 
mining  law  of MR  1883-84,  p  1003 
natural  gas  localities  and  statistics  of MR  1887,  pp  501-502;  MR  1891, 
pp  443-448;  MR  1893,  p  541;  Ann  17,  in  cont,  pp  749-750; 
Ann  18,  v  cont,  pp  916-918;  Ann  19,  vi  cont,  pp  182-183; 
Ann  20,  vi  cont,  pp  222-223;  Ann  21,  vi  cont,  pp  316-317 
natural  gas  of  Point  Abino,  hydrogen  sulphide  in Ann  19,  vi  cont,  pp  184-185 
