﻿Index 
  to 
  plates 
  in 
  geologic 
  order. 
  

  

  Igneous. 
  

  

  PLATE 
  FACING 
  PAGE 
  

  

  I. 
  Granite 
  Dyke 
  in 
  Hudson 
  River 
  Schist, 
  South 
  Side 
  of 
  192d 
  St., 
  

  

  NewYorkCity 
  124 
  

  

  II. 
  Igneous 
  Grauite 
  on 
  Lower 
  Silurian 
  Limestone, 
  192d 
  St., 
  New 
  

  

  York 
  City 
  124 
  

  

  III. 
  Exposure 
  of 
  Serpentine 
  Rock, 
  Hoboken, 
  N. 
  J. 
  Derived 
  from 
  

  

  the 
  Chemical 
  Alteration 
  of 
  au 
  Igneous 
  Rock 
  124 
  

  

  IV. 
  Palisades 
  of 
  the 
  Hudson 
  River. 
  Seen 
  from 
  Hastings, 
  West- 
  

  

  chester 
  county. 
  Triassic 
  Diabase 
  Overlying 
  Sandstone 
  

  

  Which 
  is 
  Concealed 
  by 
  the 
  Talus 
  124 
  

  

  LXXXVII. 
  Palisades 
  of 
  the 
  Hudson 
  River, 
  from 
  Fort 
  Lee, 
  N. 
  J.; 
  View 
  

  

  Northward 
  Along 
  tiie 
  172 
  

  

  LXXXVIII. 
  Palisades 
  of 
  the 
  Hudson, 
  The; 
  View 
  Northward 
  from 
  Engle- 
  

  

  wood 
  Cliffs, 
  N. 
  J 
  172 
  

  

  LXXXIX. 
  Triassic 
  Diabase 
  Exposed 
  in 
  a 
  Cut 
  for 
  the 
  Orange 
  Mountain 
  

  

  Cable 
  Road, 
  Orange, 
  N. 
  J 
  172 
  

  

  XC. 
  Triassic 
  Sandstone, 
  Contact 
  of 
  Trap 
  and 
  Underlying; 
  south 
  

  

  end 
  of 
  Lane's 
  Quarry, 
  Fort 
  Lee, 
  Bergen 
  county, 
  N. 
  J 
  172 
  

  

  Archaean 
  or 
  Precambrian. 
  

  

  V. 
  Precambrian 
  Gneiss, 
  Mohawk 
  Valley 
  at 
  Littlefalls, 
  Herkimer 
  

  

  county 
  138 
  

  

  VI. 
  Precambrian. 
  Folds 
  in 
  Fordham 
  Gneiss, 
  north 
  side 
  of 
  138th 
  

  

  street, 
  east 
  of 
  7th 
  avenue. 
  New 
  York 
  city 
  '. 
  . 
  140 
  

  

  VII. 
  Precambrian. 
  View 
  from 
  Peekskill. 
  Highlands 
  of 
  the 
  Hud- 
  

   son 
  140 
  

  

  VIII. 
  Precambrian. 
  Anthony's 
  Nose 
  and 
  Manitou 
  Mountain. 
  

  

  Highlands 
  of 
  the 
  Hudson 
  140 
  

  

  IX. 
  Precambrian. 
  Crow 
  Nest 
  and 
  Storm 
  King. 
  Highlands 
  of 
  

  

  the 
  Hudson 
  140 
  

  

  X. 
  Precambrian. 
  View^ 
  of 
  the 
  Highlands 
  of 
  the 
  Hudson 
  and 
  

   Sugar 
  Loaf 
  Mountain, 
  from 
  Ft. 
  Montgomery, 
  Orange 
  

  

  county 
  140 
  

  

  XI. 
  Precambrian 
  Granite. 
  Breakneck 
  Mountain, 
  seen 
  from 
  the 
  

  

  Shore 
  Opposite 
  Cold 
  Spring, 
  Putnam 
  county 
  140 
  

  

  XII. 
  Precambrian 
  and 
  Lower 
  Silurian. 
  Fishkill 
  Mountain, 
  seen 
  

  

  from 
  Cornwall, 
  Orange 
  county 
  _ 
  140 
  

  

  