Contents. 
11 
CHAPTER VIII. 
THE PERMO-CARBONIFEROUS. 
Permo-Carboniferous — Origin of the term — Formation of 
Coal — Building up of the Coal Measures — Fresh- water 
and Marine Conditions t — Volcanoes of the Period — 
Summary . , , 
CHAPTER IX. 
DEVONIAN. 
Origin of the Name— Mount Lambie — Occurrence of Devonian 
— Life of the Period. 
. 211 
CHAPTER X. 
THE SILURIAN ROCKS. 
Silurian Slates Tilted from Original Position — In Contrast 
with Permo-Carboniferous— True Slates and Flagstones— 
Origin of the Silurian— Limestone— Some Limestones Old 
Coral Reefs — Caves — Cave Shelters — Limestone Caves — 
Stalactites — Stalagmites — The Jenolan Caves . . . 210 
CHAPTER XI. 
BASALT, GRANITES, AND DIORITES. 
Igneous Rocks— Classification of Igneous Rocks— Basalt- 
Basaltic Dykes of Sydney — Prismatic Sandstones — Decom- 
position of Basalt — Basalt at Bondi — Examination of the 
Bondi Basalt, Macroscopic, Microscopic and Chemical — 
Granite La Maladie du Granite — Diorite . 
NATIONAL MUSEUM OF VICTORIA 
