CHAPTER XIII.

The Continent of Australia—Tasmania, or Van Diemen’s Land— Islands—Continental Islands—Pelasgic islands—New Zealand—New Guinea—Borneo—Atolls—Encircling Reefs—Coral Reefs—Barrier Reefs— Volcanic Islands—Areas of Subsidence and Elevation in the Bed of the Pacific—Active Volcanos—Earthquakes—Secular Changes in the Level of the Land 136