The Old Red Sandstone: Or, New Walks in an Old Field

Agassiz ancient animal appearance base bearing beautiful beds belong body bone character Christian clay Coal coast color common comparatively composed conglomerate connection contains course covered creature Cromarty deep deposit described discovered edge entire equally examined exhibited existing extended fact feet fins fish formation fossils Frith furnished geological geologist give granitic half head hills huge hundred ichthyolites illustration impressions instance interest known least length less lignites limestone localities lower marked mass middle minute Moray nature nearly occur Old Red Sandstone once organisms original passed period plates portion present reader regarded remains remark represented resembling rise rock sand says scales Scotland seems seen side species specimens stone strata style surface tail thick thousand tion upper vast vegetable volume whole writer