BOOK XVIII.


THE PALÆTIOLOGICAL SCIENCES.


HISTORY OF GEOLOGY.

Di quibus imperium est animarum, Umbræque silentes,
Et Chaos, et Phlegethon, loca nocte silentia late,
Sit mihi fas audita loqui; sit, numine vestro
Pandere res alta terrâ et caligine mersas.

Virgil. Æn. vi. 264.

Ye Mighty Ones, who sway the Souls that go
Amid the marvels of the world below!
Ye, silent Shades, who sit and hear around!
Chaos! and Streams that burn beneath the ground!
All, all forgive, if by your converse stirred,
My lips shall utter what my ears have heard;
If I shall speak of things of doubtful birth,
Deep sunk in darkness, as deep sunk in earth.