EO NTE Neies: 
PoAs ke Bias 
PRINCIPLES OF PALZONTOLOGY. 
INTRODUCTION. 
PAGE 
The general objects of geological science—The older theories of 
catastrophistic and intermittent action—The more modern doc- 
trines of continuous and uniform action—Bearing of these doc- 
trines respectively on the origin of the existing terrestrial order— 
Elements of truth in Catastrophism—General truth of the doc- 
trine of Continuity—Geological time, . - : ; I-10 
CHAPTER “I. 
Definition of Palzontology—Nature of Fossils—Different processes 
of fossilisation, : « . ‘ : . 5 10-14 
CHAPTER Tt 
Aqueous and igneous rocks—General characters of the sedimentary 
rocks—Mode of formation of the sedimentary rocks—Definition 
of the term ‘‘ formation ”—Chief divisions of the aqueous rocks 
—Mechanically-formed rocks, their characters and mode of origin 
—Chemically and organically formed rocks—Calcareous rocks— 
Chalk, its microscopic structure and mode of formation—Lime- 
stone, varieties, structure, and origin—Phosphate of lime—Con- 
cretions—Sulphate of lime—Silica and siliceous deposits of vari- 
ous kinds—Greensands—Red clays—Carbon and carbonaceous 
deposits, . : : : ‘ : : - ; - 14-36 
CHAPPER. LET. 
Chronological succession of the fossiliferous rocks—Tests of age of 
strata—Value of Palzeontological evidence in stratigraphical Geo- 
logy—General sequence of the great formations, - ; 37-44 
