PHILADELPHIA-Stones, a name which some authors have given to what is otherwise called Christian bones, found in the walls of that city. It is a vulgar error that these walls are built of bones; and the tradition of the country is, that when the Turks took the place, they fortified it for themselves, and built their walls of the bones of the Christians whom they had killed there. Dr Smyth in one of his epistles, mentions this wall as an instance of Turkish barbarity. This idle opinion has gained credit merely from a loose and porous stone of the sparry kind, found in an old aqueduct, which is still in the wall. Sir Paul Rycaut brought home pieces of these stones, which even he supposed to have been bones, but they proved on examination to be various bodies, chiefly vegetable, incrustated over and preserved in a spar of the nature of that which forms incrustations in Knaresborough spring, and other places with us. These bodies are often cemented together in considerable numbers by this matter, and their true shape lost in the congeries, till a diligent and judicious eye traces them regularly.