warman]  LEADVILLE LHERZOLITE.  443 
Lepidomelane,  a.ialysisand  description  of,  fromMaryland,  Baltimore. Bull 55,  pp  14-15 
Lepidosteidse  from  Triassic  of  New  Jersey  and  Connecticut .Mon  xiv,  pp  24-70 
Lesquereux  (Leo) ,  biographic  sketch  of Ann  5,  pp  376-377 
death  and  biographic  sketch  of Mon  xvn,  pp  15-18 
flora  of  Dakota  group Mon  xvn 
Lester  River  group  of  Minnesota Mon  v,  pp  279-283 
Lettering  and  conventional   signs  adopted  for  topographic  maps  of  United 
St  ates Ann  6,  pp  xviii-xix 
Lettsomite  (cyanotrichite) ,  analysis  of,  from  Utah,  Tintic  district.. Ann  19,  in,  p  700 
Leuchtenbergite,  analysis  of,  from  Russia,  Slatoust Bull  78,  p  19;  Bull  113,  p  27 
chemical  constitution  of Bull  125,  pp  53,56, 104 
residuum  from,  analysis  of Bull  1 13,  p  29 
Leucite,  chemical  constitution  of Bull  12."),  pp  30,  87, 103 
composition  of Bull  150,  p  32 
Leucite-absarokite,  analysis  of,  from  Yellowstone  Park Mon  sxxn, 
[i,  p  329;  Bull  148,  p  125;  Bull  L68,  pp  97,  99 
Leucite-banakite,  analysis  of,  from  Yellowstone  Park Mon  xxxn, 
ii,  i>347;  Bull  L48,  p  L28;   Bull  L68,  i»  L02 
Leucite-basalt,  analysis  of,  from  .Montana,  Highwood  .Mountains Bull  118, 
p  15:;;  Bull  L68,  p  L32 
Leucite-monchiquite,  analysis  of,  from  Montana,  Highwood  Mountains  .Bull  168,  p  L32 
Leueite-shoshonite,  analysis  of.  from  Yellowstone  Park,  Pyramid  Peak.  .Mon  xxxu, 
ii,  p  340;  Bull  168,  p  100 
Leucite-sodalite-tinguaite,  pseudo,  analysis  of,  from  Montana,  Bearpaw  Moun- 
tains . Bull  118,  p  157;   Pull  168,  p  136 
Leucite-syenite,  analysis  of,  from  Montana,  Highwood  Mountains Bull  148, 
pp  153,  154;  Bull  L68,  pp  132,  133 
Leucite-tinguaite,  analysis  of,  from  Arkansas,  Magnet  Cove Ann  18,  in,  p  569 
Leucitite,  analysis  of,  from  Montana,  Bearpaw  Mountains Bull  148, 
p  L57;  Pull  L68,  p  136 
Leucophanite,  chemical  constitution  of Bull  125,  pp  96,  106 
Leveling.     (See  Spirit  leveling,  i 
Leverett  (F.J ,  Illinois  glacial  lobe,  monograph  on Mon  xxxvm 
water  resources  of  Illinois Ann  17,  n,  pp  695-849 
water  resources  of  Indiana  and  ( >hio Ann  L8,  iv,  pp  419-559 
wells  of  northern  Indiana WS  21 
wells  of  southern  Indiana WS  26 
Leverett  (F. )  and  Campbell  (M.  R. ),  geology  of  Danville  quadrangle,  Illinois- 
Indiana  GF  67 
Levynite,  analysis  and  general  description  of,  from  Table  Mountain,  Colo- 
rado   Bull  20,  pp  37-38 
chemical  constitution  of Bull  125,  pp  38-39,  44, 102 
Lewis  shale  of  Colorado GF  60,  p  5 
Lewis  and  Clarke  Forest  Reserve,  Montana,  report  on Ann  21,  v,  pp  27-80 
Lewistown  limestone  in  Maryland,  Virginia,  and  West  Virginia GF  14,  pp  1,  2; 
GF  28,  pp  2-3;  GF  32,  p  3;  GF  61,  p  4 
Lewisville  beds  of  Texas Ann  21,  vn,  pp  308-313 
Lexicon,  mineralogic,  of  Massachusetts,  Franklin,  Hampden,  and  Hampshire 
counties Mon  xxix,  pp  754-761 ;  Bull  126 
Lexington  limestone  of  Kentucky GF  46,  p  2 
Lexington  quadrangle,  Nebraska,  topography  of TF  2,  p  6 
Leyden  argillite  of  Massachusetts  and  Connecticut Mon  xxix, 
pp  201-210;  GF50,  pp  3,  5 
Lherzolite,  analysis  of,  from  Maryland,  near  Batimore Ann  15,  p  674; 
Bull  148,  p  83;  Bull  168,  p  42 
