CATARACTS, AND

GEYSERS,

Described and Illustrated.

By

JOHN GIBSON,

66

Natural History Department Edinburgh Museum of Science and Art; Author of "Chips from the Earth's Crust," Science Gleanings in Many Fields,"

&c. &c.

WITH 32 JLLUSTRATIONS

London:

T. NELSON AND SONS, PATERNOSTER ROW.

EDINBURGH; AND NEW YORK.