A Geological Puzzle

Being at my seat near the village of Meudon, and overlooking a quarry-man, whom I had set to break some very large and hard stones, in the middle of one we found a huge live toad, though there was no visible aperture by which it could have got there. I could not help expressing my wonder how it had been generated, had grown, and lived; but the labourer told me, it was not the first time he had met with toads and the like creatures within huge blocks of stone, in which there could be found no visible opening or fissure.

— Ambrose Pare, chief surgeon to Henry III of France, quoted in The Monthly Magazine, 1798