Page:A Treatise on Geology, volume 1.djvu/13

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vii
CONTENTS.
Page
Structure of the Globe─continued.
Origin of stratified and unstratified Rocks 45
Relative Periods of disturbed Stratification 49
 
CHAP. IV.
 
SERIES OF STRATIFIED ROCKS.
 
Sections and Maps of Strata 53
Table of British stratified Deposits 54
Varieties of Stratification 59
Divisional Structures of Rocks 62
Geographical Relations of Joints 65
Cleavage 67
 
CHAP. V.
 
ORGANIC REMAINS OF PLANTS AND ANIMALS.
 
Fossil Plants 69
Table of their Geological Distribution 73
Fossil Zoophyta 73
Table of certain Groups 76
Fossil Mollusca 77
Table of proportionate Number of Species at different Geological Periods 80
Table of proportionate Number of Species in the different Orders or Classes of Mollusca in different Geological Periods 81
Table of Genera containing many living Species of Gasteropoda 82
Table of Genera containing many Fossil Species of Conchifera 83
Table of Genera of Cephalopoda 83
Table of Subgenera of Ammonites 84
Articulated Animals 84
Table of Crustacea 85
Fossil Fishes 86
Agassiz's. Classification of Fishes 88
Table 90
Fossil Reptiles 91
Owen's System of Fossil Saurians 92
Fossil Birds 95
Fossil Mammalia 95
Marsupial of Stonesfield 97
Table of Mammalia 99
General Considerations 100
 
CHAP. VI.
 
HISTORICAL VIEW OF THE STRATIFIED ROCKS IN THE CRUST OF THE EARTH.
 
Introductory Remarks 107
Granitic Basis of the Crust of the Earth 108