﻿VI 
  CONTENTS. 
  

  

  CHAPTER 
  IX. 
  

  

  Page 
  

  

  Upper 
  cretaceous 
  series 
  (igneous). 
  — 
  Lithology 
  ; 
  lavas; 
  agglomerates 
  and 
  

  

  ashes 
  ; 
  dykes 
  ; 
  relations 
  to 
  underlying 
  beds 
  ; 
  intertrappeans 
  . 
  . 
  51 
  

  

  CHAPTER 
  X. 
  

  

  Economic 
  Geology 
  : 
  iron; 
  lead 
  and 
  silver 
  ; 
  copper; 
  lime; 
  building 
  stones 
  . 
  64 
  

   One 
  Plate 
  and 
  three 
  Maps. 
  

  

  