...of sediment, but they were subsequently so altered by subterranean heat, as to assume a new texture. It is demonstrable, in some cases at least, that such...turned into white statuary marble, and. hard clays into slates called mica-schist and hornblende-schist, all signs of organic bodies having been obliterated....

...obliterated entirely," the question naturally rises : How does he know this? So, when he says (p. 8), "In some cases, dark limestones, replete with shells...corals, have been turned into white statuary marble, every vestige of the organic bodies having been obliterated," the query might be raised, whether it...

...of sediment, but they were subsequently so altered by subterranean heat, as to assume a new texture. It is demonstrable, in some cases at least, that such...turned into white statuary marble, and hard clays into slates called mica-schist and hornblende-schist, all signs of organic bodies having been obliterated....

...of sediment, but they were subsequently so altered by subterranean heat, as to assume a new texture. It is demonstrable, in some cases at least, that such...turned into white statuary marble, and hard clays into slates called mica-schist and hornblende-schist, all signs of organic bodies having been obliterated....

...of sediment, but they were subsequently so altered by subterranean heat, as to assume a new texture. It is demonstrable, in some cases at least, that such...vestige of the organic bodies having been obliterated. Although we are in a great degree ignorant of the precise nature of the influence exerted in these...

...of sediment, but they were subsequently so altered by subterranean heat, as to assume a new texture. It is demonstrable, in some cases at least, that such...vestige of the organic bodies having been obliterated. Although we are in a great degree ignorant of the precise nature of the influence exerted in these...

...complete conversion has actually taken place, fossiliferous strata having exchanged an earthy for :i highly crystalline texture for a distance of a quarter...vestige of the organic bodies having been obliterated. Although we are in a great degree ignorant of the precise nature of the influence exerted in these...

...all traces of them were obliterated by the intense heat to which they were subjected. In this way, dark limestones, replete with shells and corals, have...turned into white statuary marble ; and hard clays into mica and hornblende schists. Sir C. Lyeli proposes that these rocks should be called Metamorphic...

...granite. By this process fossils are of course destroyed. "In some cases," says Sir Charles Lyell, " dark limestones, replete with shells and corals, have been turned into white statuary marble, and haul clays, containing vegetable or other remains, into slates called mica-schist or hornblende-schist;...

...cases at least, that such a complete conversion has actually taken place, fossiliferous strata inving exchanged an earthy for a highly crystalline texture...containing vegetable or other remains, into slates called mica -schist or hornblendesehist, every vestige of the organic bodies having been obliterated. Although...