warm  an.]  LAURENTIAN LEAD.  441 
Lavas,  order  of  succession  of Ann  1 8,  in,  pp  304-305 
Lavenite,  chemical  constitution  of Bull  125,  pp  77,  89,  105 
Law  establishing  the  Irrigation  Survey Ann  10,  n,  p  38 
establishing  and  extending  the  II.  S.  <  reol.  Survey.  -  -Ann  1,  pp  3-4;  Ann  4,  p  xm 
governing  the  establishment  of  forest  reserves Ann  19,  i,  pp  15-18 
tariff  of  March  3,  1883,  schedules  from MR  1882,  pp  777-787 
Law,  mining,  historical  sketch  of MR  L883-84,  pp  988-1004 
of  States  east  of  Mississippi MR  L886,  pp  722-790 
Lawson  (A.  C),  sketch  of  geology  of  San  Francisco  Peninsula \nn  L5,  pp  399-476 
work  in  charge  of,  1893-1900. .  Ann  L5,pp  177-17N;   Ann  L6, 1,  pp  36-37;    Ann  17, 
i.  p  48;   Ann   is.  i.  p  Hi:    Ann  20,  i.  p  49;    Ann  21.  i.  p  82 
Lazulite,  analysis  of,  from  North  Carolina,  Gaston  County Bull  74,  p  78 
occurrence  of M  K  1 883-84,  1 1  77:; 
Lazurite,  chemical  constitution  of Bull  127),  pp  22, 103 
Le  Chat clicr's  researches  on  cements Ml!  L891,  pp  r>:>7-538 
Le  Conte  (Joseph),  quoted  on  formation  of  Basin  ranges \nn  17,  i,  p533 
Lead,  desilverizing,  recent  improvements  in MR  L883  84,  pp  162    17.". 
in  eruptive  rocks Mon  \n.  p  578 
production  of,  statistics  of MR  L882,  pp  306  ■".  !■">: 
ML  1883-84,  pp  411  17:'.;  Ml!  1885,  pp  211  271;  ML  1886, 
PP  llti  153;  MR  1887,  pp  98  L12;  Ml;  L888,pp78  91;  ML 
1889-90, pp  78-87;  Ml;  L891,  pp  in::  110;  Mi;  1892,  pp 
121-12!*;   MK  L893,pp  89-102;  Ann  L6,  in,  pp  359-377;  Ann 
17,  in.  pp  131-162;  Ann  L8,v,pp  237-262;  Ann  19,vi,pp 
L97   222:    Ann   20,  VI,  pp  221-217,     Ann    21.   vi,  pp   225-247 
smelting  of  argentiferous,  in  far  West  Ml;  L882,  pp  324   345 
Lead  deposits  in  Alaska \nn  21 ,  n.  p  182 
in  Colorado,  Lead vi lie Mon  vn.  p  66 
in  Connecticut-Massachusetts,  Holyoke  quadrangle GF  50,  p  8 
in  Corinthia,  Raibl Mon  vn, pp  68-102 
in  England,  Cumberland  and  I  terbyshire. Mon  vn,pp  67-68 
in  Great  Basin Mon  vn,  pp  64-65 
in  Massachusetts-Connecticut,  Holyoke  quadrangle GF  50,  p  8 
in  Missouri Mon  vn,  p  66 
disseminated  lead  ores  of  southeastern Bull  1 32 
in  Montana,  Butte  district GF  38,  p  5 
in  Philippine  Islands Ann  L9,  vi  cont, p  692;  Ann  21,  m,  pp  590-591 
in  Porto  Rico Vnn  20,  vi  cont,  p  784 
in  Silesia  and  Westphalia Mon  vn,  p  68 
in  Tennessee,  Briceville  quadrangle .GF  33,  p  4 
Cleveland  quadrangle GF  20,  p  4 
Morristown  quadrangle GF  27,  p  5 
in  United  States MR  1887,  pp  103-110;  MR  1888,  pp  85-89 
in  Upper  Mississippi Mon  vn,  p  65 
Lead  and  zinc  deposits  of  Missouri,  investigation  of Ann  11, 
i,  pp  54,  80-81;  Ann  12,  i  pp  56,  90;  Ann  13,  i,  p  123 
Lead  minerals  of  Colorado,  Cripple  Creek  district Ann  16,  n,  p  124 
Lead-silver  deposits  of  Colorado,  Leadville  district Mon  xn,  pp  367-584 
of  Nevada,  Eureka Mon  vn 
Lead  slags,  analyses  and  chemical  properties  of MR  1883-84,  pp  447-460 
Lead,  white  and  red,  statistics  of.  .MR  1882,  p  xn;  MR  1883-84,  p  920;  MR  1885,  p  524; 
MR  1886,  pp  702,  703;  MR  1887,  pp  674,675;  MR  1888,  pp 
66,  67;  MR  1889-90,  p  511;  MR  1891,  pp  597,  598;  MR  1892, 
pp  815,  819,  820;  MR  1893,  pp  758,  759,  762,  763-766;  Ann 
18,  v  cont,  pp  1337, 1344, 1317;  Ann  19,  vi  cont,  pp  645-648; 
Ann  20,  vi  cont,  pp  721,  731-733;  Ann  21,  vi  cont,  pp  581-585 
