What is "etnas"

Usage examples of "etnas".

No one can make an affidavit to the contrary, and therefore I still say nothing against the supposition: indeed, were geologists to assert that the whole continent of America had in like manner been formed by the simultaneous explosion of a train of Etnas laid under the water all the way from the North Pole to the parallel of Cape Horn, I am the last man in the world to contradict them.