The Geological Observer

accumulations acid Alumina amid animals appear ashes atmosphere augite beach beds beneath bones British Islands calcareous carbonate carbonic acid caverns caves channel cinders clay cliffs considered coral reefs crater currents Daubeny deposits depth descend detritus distance dry land effects elevated erratic blocks eruption estuary fathoms feet fissures Forbes formed fragments of rock geological glaciers ground height hyænas icebergs inferred kind lagoon lake lava lime limestone magnesia mammals manner marine mass matter mechanical suspension miles mineral mingled modifications molluscs molten mountain névé northern noticed observer ocean ossiferous pebbles portions present produced Professor regards regions remains respect rise river Roderick Murchison sand sea bottom shells shingles shore side silica Sir Charles Lyell Sir James Ross snow species specific gravity streams submergence substances sufficient supposed surface temperature thrown tidal tide tion trachytic transported tuff valley vapours various vegetation vent Victoria Land volcanic action waves winds