﻿GENERAL 
  INDEX 
  

  

  401 
  

  

  Lake 
  Champlain, 
  boat 
  stones 
  found 
  

   near, 
  63"; 
  gorgets, 
  82*; 
  iron 
  ores, 
  

   218''-19'; 
  slate 
  knives, 
  66*; 
  tubes, 
  

   52*; 
  woman's 
  knives, 
  70". 
  

  

  Lake 
  Mohonk, 
  on 
  the 
  Shawanguuk 
  

   grit, 
  15r. 
  

  

  Lake 
  Ontario, 
  slate 
  knives 
  found 
  

   near, 
  66*. 
  

  

  Lakes 
  of 
  central 
  New 
  York, 
  161*; 
  

   Some 
  higher 
  levels 
  in 
  post-glacial 
  

   development 
  of, 
  by 
  T. 
  L. 
  Watson, 
  

   r55-117. 
  

  

  Lap 
  worth, 
  , 
  geologic 
  studies, 
  

  

  146\ 
  

  

  Laramie 
  group, 
  174*. 
  

  

  Laurentian 
  rocks 
  of 
  Canada, 
  138^ 
  

  

  Lead 
  ore, 
  122'; 
  localities 
  producing. 
  

   232«. 
  

  

  Lenticular 
  iron 
  ores, 
  219^ 
  

  

  Lepiota 
  acerina, 
  283'. 
  

  

  Lepiota 
  arenicola, 
  298^ 
  

  

  Leptonia 
  subserrulata, 
  288^. 
  

  

  Leverett, 
  Frank, 
  cited, 
  rl02'. 
  

  

  Lewis 
  county, 
  Ordovician 
  and 
  Eo- 
  

   Silurian 
  systems 
  in, 
  r21-54; 
  Pots- 
  

   dam 
  sandstone 
  exposures, 
  145^; 
  

   Hudson 
  river 
  group, 
  149^ 
  

  

  Lignite, 
  localities 
  produciug. 
  235*. 
  

  

  Lime, 
  222^ 
  

  

  Limestone, 
  125^ 
  127^ 
  196''-203^ 
  con- 
  

   stituents, 
  12r, 
  194»-95'; 
  of 
  Aca- 
  

   dian 
  group, 
  144^; 
  of 
  Adirondacks, 
  

   142^; 
  of 
  Dutchess 
  county, 
  143- 
  ; 
  of 
  

   Lower 
  Silurian 
  system, 
  146^-49'; 
  

   Trenton 
  group, 
  147=; 
  of 
  Upper 
  Hel- 
  

   derberg 
  group, 
  158*-60'; 
  of 
  Upper 
  

   Silurian 
  system, 
  153^-58^; 
  of 
  

   Washington 
  county, 
  143\ 
  See 
  also 
  

   Crystalline 
  limestone; 
  Magnesian 
  

   limestone; 
  Tully 
  limestone; 
  Upper 
  

   Helderberg 
  limestone. 
  

  

  Limonites, 
  220'-2r. 
  

  

  Lincklaen, 
  Ledyard, 
  Guide 
  to 
  geolo- 
  

   gy 
  of 
  New 
  York 
  and 
  to 
  the 
  state 
  

   geological 
  cabinet, 
  109''-10'. 
  

  

  Lincoln, 
  D. 
  F., 
  cited, 
  vQ7\ 
  r69-, 
  rl45\ 
  

   rl53''. 
  

  

  Lintner, 
  J. 
  A., 
  gift, 
  278^ 
  

  

  Lithology, 
  manual 
  of, 
  120°. 
  

  

  Littlefalls, 
  Archaean 
  rocks, 
  138''-39*; 
  

   pre-Cambrian 
  rocks, 
  14P; 
  calcif- 
  

   erous 
  sandrock, 
  147\ 
  

  

  Livingston, 
  R. 
  F., 
  cited, 
  rl36*. 
  

  

  Lloyd, 
  C. 
  G., 
  gift, 
  274\ 
  

  

  Locality 
  numbers, 
  key 
  to, 
  r54. 
  

  

  Long 
  Island, 
  gorgets 
  found 
  on, 
  80'; 
  

   terminal 
  moraine, 
  176", 
  203^ 
  

  

  Long 
  Island 
  clays, 
  212*. 
  

  

  Longmeadow 
  sandstone, 
  195". 
  

  

  Lower 
  Helderberg 
  group, 
  157*— 
  58\ 
  

  

  Lower 
  Helderberg 
  limestones, 
  201^ 
  

  

  Lower 
  Pentamerus 
  limestone, 
  157^. 
  

  

  Lower 
  Silurian 
  system, 
  see 
  Ordovi- 
  

   cian 
  system. 
  

  

  Ludlowville 
  shale, 
  163*. 
  

  

  Lycoperdon 
  cepiforme, 
  294*. 
  

  

  Lyell, 
  Sir 
  Charles, 
  Principles 
  of 
  

   geology, 
  113% 
  237^; 
  division 
  of 
  Eu- 
  

   ropean 
  Tertiary, 
  174^ 
  

  

  Lysander, 
  banner 
  stones 
  found 
  in, 
  

   75^ 
  

  

  MacFarlane, 
  James, 
  Geological 
  

  

  railway 
  guide, 
  237^ 
  

   Mcllvaine, 
  Charles, 
  gift. 
  273». 
  

   Madison 
  county, 
  perforators 
  found 
  

  

  in, 
  83". 
  See 
  also 
  Nichols 
  pond. 
  

   ]Magu6<6ia-iron 
  silicates, 
  120', 
  121*. 
  

   Magnesian 
  limestone, 
  120", 
  205*. 
  

   Magnesite, 
  localities 
  producing, 
  234\ 
  

   Magnetic 
  iron 
  ores, 
  216"'-19% 
  

   Magnetite, 
  122". 
  

   Mammals, 
  collection 
  of, 
  r20; 
  of 
  me- 
  

  

  sozoictime, 
  170"; 
  of 
  Jurassic 
  period, 
  

  

  172^ 
  of 
  Cretaceous 
  period, 
  174"; 
  

  

  of 
  Tertiary 
  period, 
  175". 
  

   Man, 
  age 
  of, 
  179^ 
  

   Manganese, 
  localities 
  producing, 
  

  

  233^ 
  

   Maps, 
  of 
  New 
  York 
  state, 
  r7', 
  r9='; 
  

  

  of 
  New 
  England, 
  r9^; 
  of 
  New 
  York 
  

  

  city, 
  r9'; 
  of 
  glacial 
  lakes, 
  r64». 
  

  

  