warman.]  LODES LOUISIANA.  453 
Longitude  observations  in  determining  Idaho-Montana  boundary  line Bull  170, 
pp  23-24 
Longitudes  and  latitudes  of  places  in  Missouri,  Kansas,  and  New  Mexico Bull  49 
of  places  iii  United  States Bull  123 
Longmeadow  sandstone  of  Massachusetts  and  Connecticut Mon  xxix, 
pp  364-369;  GF  50,  p  5 
Lookout  formation  in  Southern  Appalachians,  relation  of,  to  Pottsville Ann  20, 
ii,  pp  817-818 
Lookout  sandstone  of  Alabama,  Georgia,  and  Tennessee GF  2, 
p  2;  GF  4,  p  2;  GF  6,  p  2;  GF  8,  p  2;  GF 
19,  p  2;  GF  21,  p  2;  G  F  22,  p  2;  GF  35,  p  2 
Lord  (F.) ,  Comstock  mining  and  miners Mon  iv 
report  of  Tenth  Census  work Ann  1,  pp  4S-50 
Lord  (E.  C.  E. ),  report  on  igneous  rocks  from   vicinity  of  San  Carlos  and 
Chispa.  Texas Bull  164,  pp  88-95 
Lord  (J.  S. ),  Illinois  coal MR  1888,  pp  242-256 
Los  Angeles  River,  How  of,  measurements  of Ann  18, 
iv,  pp  413-415;  Ann  20,  iv,  pp  541-543;  WS  39,  pp  409-410 
Los  Pinos  River,  ( Jolorado,  l low  of,  meaurements  of Ann  21, 
iv.  pp  299-300;  WS  38,  pp  309-310 
profile  of WS  44,  p  85 
Lost  rivers,  especially  in  Indiana  ami  Ohio  (subterranean  drainage  lines) \nn  18, 
iv,  p  483 
Loudon  quadrangle,  Tennessee,  geology  of GF  25 
Loudoun  formation  in  Catoctin  belt Ann  14,  n,  pp  324-329;  OF  10,  p  2 
Louisiana,  altitudes  in Bull  5,  p  12-");   Lull  7ti:   Bull  L60,  pp  250-255 
atlas  sheets  of.     (See  pp  77-78  of  this  bulletin.) 
boundary  lines  of,  and  admission  of  State Bull  13, 
pp  30,  104-105;   Bull  171,  pp  110-111 
brick  industry  of MR  1SS7,  pp  536,  538;  MR  1888,  p  560 
building  stone  from,  statistics  of Ann  19, 
\  i  cont,  pp  207,  264,  266,  270;   Ann  20,  vi  cont,  pp 
271,  336,  :;:;7.  338,  340;  Ann  21,  vi  cont,  p  335  etseq 
clay  products  of,  statistics  of MR  L891,  p507; 
Ann  Hi,  iv.  pp  51S,  51!),  520,  521;  Ann  17,  in  cont, 
[>  819  et  seq;  Ann  IS,  v  cont,  p  L078  el  seq;  Ann  19, 
vi  cont,  p  318  et  seq;  Ann  20,  vi  cont,  p  466  et  seq 
coke  in,  manufacture  of Ann  20,  vi  cont,  p  227 
Donaldsonville  quadrangle,  river-flood  plains  in TF  1,  pp  3-4 
floods  on  Mississippi  River,  discussion  of \nn  20,  iv,  pp  347-352 
gas,  illuminating  and  fuel,  and  by-products  in,  statistics  of Ann  20, 
vi  cont,  pp  227,  240,  243,  246,  247,  249 
geographic  positions  in Bull  123,  pp  86-92 
geologic  and  paleontologic  investigations  in Ann  7, 
pp  103-104;  Ann  12,  i,  p  75;  Ann  13,  i,  p  106 
geologic  maps  of,  listed Bull  7,  p  140 
(See  Map,  geologic,  of  Louisiana.) 
geologic  sections  in.     (See  Section,  geologic,  in  Louisiana. ) 
geology  and  paleontology  of  northwestern Bull  142 
harbors  on  coast  of Ann  13,  n,  pp  194-195 
iron-ore  deposits  of MR  1887,  pp  50-51 
iron  regions  of  northern,  and  eastern  Texas.     (See  p  113  of  this  bulletin.) 
magnetic  declination  in Ann  17,  i,  pp  350-352 
maps,  geologic,  of.     (See  Map,  geologic,  of  Louisiana.) 
maps,  topographic,  of.     (See  Map,  topographic,  of  Louisiana;  also  pp  77-78 
of  this  bulletin.) 
