Geological Gossip,or, Stray Chapters on Earth and Ocean

accumulation acid Africa ancient animals appears Atlantic Australia average beds bones bottom Boucher de Perthes carbonate of lime carbonic acid carnivora caverns cavities century clay coal coast cone contain crater deposit depth direction discovery distance district doubt drift period earth earthquakes elevation England eruption Europe existence extinct feet flint fragments geological geologists gold granite gravel Gulf Stream human hy©¡na important inhabitants interior Irish elk iron islands kind known Lake Lake Ngami land lava limestone mass material matter mineral mountain nature Nile mud Northern observation obtained occasionally ocean oolites origin peculiar phenomena potash pottery present probably produced quadrupeds quantity quartz race reached remains remarkable result river rocks sand shells silicate South South America species square miles stalagmite stone stream sunk surface temperature thickness thousand Timbuctu tion tons tract valley vapour various vast vegetable volcanic volcanic cones water-glass whole