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1. Age of Man.

Pliocene

Mucene

2. Age of Mammals

Eocene

CRETACEOUS PERIOD
Chalk
Greensand

OOLITIC PERIOD
Wealden
Oolite
Lias

3. Age of Reptiles

TRIASSIC PERIOD

PERMIAN PERIOD Magnesian Lumestone New Red Sandstone

CARBONIFEROUS PERIOD Coal Measures

Millstone Grit

4. Age of Amphibians

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5. Age of Fishes

Middle Devonion

Lower Devonian

SILURIAN PERIOD

Upper Silurian

Middle Silurian

6. Age of Brachiopoda

Lower Suurrian

CAMBRIAN PERIOD

Upper Cambrian

7. Age of Hydrozoa

Tower Cambrian

FIRST

LAURENTIAN PERIOD

8 Age of Protozoa

EOZOIC.

GRANITE

Section of the Earth's Crust.

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AUTHOR OF “ THE BRIGHT SIDE,” “GLAŃCES THROUGH THE GATES,”

ETC.

“Creation was but the development of a thought.”

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BEMROSE AND SONS, 10, PATERNOSTER BUILDINGS;

AND DERBY.
J. DICKENSON, SUTTON STREET, COMMERCIAL ROAD,

EAST.

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