440  INDEX    TO    PUBLICATIONS    OF    U.    8.    GEOL.    SURVEY,      [hull.  177. 
Laurentian  rocks  of  Canada  and  the  Great  Lakes  region Bull  86,  passim 
relations  of  Keweenawan  rocks  to  Huronian  and Ann  3,  pp  156-173 
of  Penokee  iron-bearing  series  of  Michigan  and  Wisconsin  to  Huronian 
and. . .  Ann  10,  i,  pp  458-464;  Mon  xix,  pp  45-46,  58,  59-61,  76-77 
(See,  also,  Algonkian;  Archean.) 
Laurentian  system,  history  of  term Bull  86,  pp  462,  470-474 
Laurinese  from  Dakota  group Mon  xvn,  pp  91-108 
from  Laramie  group Bull  37,  pp  46-51 
Lassen  Peak  district,  California,  geology  of Ann  8,  i,  pp  395-432;  Bull  33 
Lassen  Peak  quadrangle,  California,  geology  of GF  15 
Latite,  analysis  of,  from  California,  near  Mill  Creek  (vitrophyric)  ..Bull  89,  pp  58,  66 
analysis  of,  from  Utah,  Tintic  district GF  65,  p  3 
of  California,  Big  Trees  quadrangle GF  51,  46-7 
chemical  composition  of Bull  89,  pp  57-59,  66-67 
classification  of Bull  89,  pp  59-65 
Mother  Lode  district GF  63,  p  6 
occurrence  and  distribution  of Bull  89,  pp  14-27 
petrography  of Bull  89,  pp  27-57 
Latitude,  determination  of,  method  of,  in  topographic  work Mon  xxn,  pp  21-31 
observations  for,  at  Spokane,  Washington Bull  1 70,  pp  21-22 
Latitudes  and  longitudes  of  certain  points  in  Missouri,   Kansas,  and  New 
Mexico Bull  49 
of  places  in  the  United  States Bull  123 
Lava,  aa  type  of,  characteristics  of Ann  4,  p  95 
analysis  of,  from  Alaska,  Bogoslof  and  St.  Augustine Ann  18,  in,  pp  53,  58 
from  Arizona,  near  Mount  Trumbull  (recent) Bull  64,  p  48; 
Bull  148,  p  188;  Bull  168,  p  174 
from  California,  Butte  County  (andesite) Bull  55,  p  85 
near  Lassen  Peak  . . .  .Bull  60,  pp  156, 157;  Bull  79,  p  29;  Bull  150,  p  218 
near  Mill  Creek  (red) Bull  89,  p  58 
various  localities Bull  55,  pp  84,  85 
from  New  Mexico,  San  Mateo  Mountains Bull  27,  p  64; 
Bull  148,  p  185;  Bull  168,  p  170 
cascades  of,  in  Grand  Canyon  of  Colorado Mon  n,  pp  85,  92, 106, 116 
columnar  jointing  in,  description  of,  as  one  of  the  educational  series  of 
rock  specimens Bull  150,  pp  256-258 
of  Alaska,  southwestern Ann  20,  vn,  pp  226,  232-233 
of  Bonneville  Basin  (basaltic) Mon  i,  pp  319-336 
of  California,  Coast  Ranges Mon  xin,  pp  145-164 
Lassen  Peak  quadrangle GF  15,  p  3 
Mono  Valley  (modern) : Ann  8,  i,  pp  372-377 
northern,  from  a  late  volcanic  eruption Bull  79 
not  fused  sediments Mon  xin,  p  174 
Sierra  Nevada,  western  slope Bull  89 
of  Grand  Canyon,  pre-Cambrian,  petrographic  character  of. .  Ann  14,  n,  pp  520-524 
of  Hawaiian  Islands,  volcanoes  of Ann  4,  pp  84-98,  etc. 
of  Maine,  Aroostook,  volcanic  area  (vesicular) Bull  165,  pp  159-161 
of  Michigan,  Crystal  Falls  district.. Ann  19,  in,  pp  50-55;  Mon  xxxvi,  pp  80-135 
of  Montana Bull  139,  pp  69-73 
of  Nevada,  Eureka  district,  chemical  composition  of Mon  xx,  pp  264-267 
Eureka  district,  manner  of  occurrence  of .' Mon  xx,  pp  243-249 
of  New  Mexico,  San  Jose  Valley  (recent) Ann  6,  pp  179-182 
of  Washington,  Columbia Ann  20,  n,  pp  129-134 
pahoehoe  type  of,  characteristics  of Ann  4,  p  95 
(See  Andesite;  Basalt,  etc.) 
Lava  soil,  analysis  of,  from  Hawaiian  Islands Bull  60,  p  164;  Bull  148,  p  301  j 
