Sketch-book of Popular Geology

amid Ammonites ancient animal appearance Arthur Seat beach beds Belemnite beneath bottom boulder-clay boulders Brora Caithness Carboniferous Chalk character clay Coal Measures colour cones contains Crag Crag and Tail creature Cromarty curious cuttle-fish débris deposits depth district earth elevation existing extinct feet Firth fish flora forests formation fossil fragments furnished ganoid geologic geologist glacial glacier gneiss granitic gravel grooved Highlands hills hollow hundred icebergs island lake land least Lias Loch lower mark masses miles molluscs Moray Moray Firth mosses neighbourhood northern occur ocean old coast line Old Red Sandstone Oolite organisms Paleozoic peculiar period Pleistocene portion precipices present remains reptile resemble rise river rocks Roderick Murchison sand scarce scenery Scotland Scottish seems seen shells shores side Silurian Sir Roderick species specimens stone strata stratum surface Tertiary thick thousand tide tion trap trees Triassic upper valley vast vegetable waves