x CONTENTS 
CHAPTER’ ¥ 
ROCKS—continued 
Metamorphic Rocks :—A. Schistose Rocks—their General Char- 
acters. Quartzose Rocks. Argillaceous Rocks. 
PAGE 
Mica-schist. 
Gneiss. Chlorite-schist. Talc-schist. Amphibolites. Granu- 
lite. Marble. Serpentine. &. Cataclastic Rocks—their 
General Characters. Mylonites. Friction-breccias. Deter- 
mination of Rocks in the Field. General Characters of 
Argillaceous, Calcareous, Siliceous, and Felspathic Rocks. 
; : - - 74-89 
Specific Gravity of Rocks 
CHAPTER VI 
FOSSILS 
Modes of Preservation of Organic Remains. Kinds of Rock in 
which Fossils occur. Fossils chiefly of Marine Origin. Im- 
portance of Fossils in Geological Investigations. Climatic 
and Geographical Conditions and Terrestrial Movements 
deduced from Fossils. Geological Chronology and Fossils 90-103 
CHAPTER Val 
STRATIFICATION AND THE FORMATION OF ROCK-BEDS 
Consolidation of Incoherent Accumulations. Lamination and 
Stratification. Extent and Termination of Beds. Contem- 
poraneous Erosion. Grouping of Strata. Contemporaneity 
of Strongly Contrasted Strata. Diagonal Lamination and 
Stratification. Surface markings 
CHAPTER Vath 
104-119 
CONCRETIONARY AND SECRETIONARY STRUCTURES 
Siliceous Concretions—Flint, Chert, Menilite. Calcareous and 
Ferruginous Concretions — Septaria, Composite Nodules, 
Rattle-stones, Fairy-stones, Kankar, etc. Clay-ironstone 
Nodules, Pyrite, Marcasite, Gypsum, Dendrites. 
Concretion- 
ary Sandstones, Argillaceous Rocks, and Limestones. Con- 
cretionary Tufis. Concretions in Crystalline Igneous Rocks. 
Secretionary Structures—Amygdules, Geodes, Drusy Cavities 120-127 
CHAP T Env 

INCLINATION AND CURVATURE OF STRATA 
Dip—Apparent and True. Terminal Curvature. Outcrop in- 
fluenced by Angle of Dip and Form of Ground. | Strike. 
Curvature of Strata—Monoclinal Folds, Quaquaversal and 
Centroclinal Folds, Normal or Symmetrical Folds, Unsym- 
metrical Folds, Inversion, Recumbent Folds, Fan-shaped 
Structure, Contorted Strata. Origin of Folds . ; 127-143 
