Volcanic Islands [86]
within tuff craters.
Terceira.
Tertiary deposit of St. Jago.
Trachyte, absent at the Galapagos archipelago. -at Ascension. -at Terceira. -decomposition of, by steam. -its lamination. -its separation from basalt. -softened at Ascension. -specific gravity of. -with singular veins.
Trap-dikes in the plutonic series. -at King George's sound.
Travertin at Van Diemen's land.
Tropic-bird, now rare, at St. Helena.
Tuff, craters of. -their breached state. -peculiar kind of.
Turner, Mr., on the separation of molten metals.
Tyerman and Bennett on marine remains at Huaheine.
Valleys, gorge-like, at St. Helena. -in New South Wales. -in St. Jago.
Van Diemen's land.
Veins in trachyte. -of jasper.
Vincent, Bory St., on bombs.
Volcanic bombs. -island in process of formation in the Atlantic. -islands, their distribution.
Wacke, its passage into lava.
Wackes, argillaceous.
Webster, Dr., on a basin-formed island. -on gypsum at Ascension.
White, Martin, on soundings.
Wind, effects of, on the form of craters.
End
Terceira.
Tertiary deposit of St. Jago.
Trachyte, absent at the Galapagos archipelago. -at Ascension. -at Terceira. -decomposition of, by steam. -its lamination. -its separation from basalt. -softened at Ascension. -specific gravity of. -with singular veins.
Trap-dikes in the plutonic series. -at King George's sound.
Travertin at Van Diemen's land.
Tropic-bird, now rare, at St. Helena.
Tuff, craters of. -their breached state. -peculiar kind of.
Turner, Mr., on the separation of molten metals.
Tyerman and Bennett on marine remains at Huaheine.
Valleys, gorge-like, at St. Helena. -in New South Wales. -in St. Jago.
Van Diemen's land.
Veins in trachyte. -of jasper.
Vincent, Bory St., on bombs.
Volcanic bombs. -island in process of formation in the Atlantic. -islands, their distribution.
Wacke, its passage into lava.
Wackes, argillaceous.
Webster, Dr., on a basin-formed island. -on gypsum at Ascension.
White, Martin, on soundings.
Wind, effects of, on the form of craters.
End