THERE is no warranty for suggesting that “stones resembling anthrax” are anthracite; they are far more likely to have been bituminous coal or lignite, both of which burn more readily than does anthracite, which latter is decidedly difficult of ignition. Whilst European Turkey has not been fully explored for coal, the existence of coal is known in various places; a bituminous coal-seam is reported near Keshan, in the province of Adrianople, and along parts of the northern coast of the Sea of Marmora; and there are lignite deposits known near Rodosto, near Dedeagatch, and even within a short distance of Constantinople. Obviously any of these deposits might have given rise to the stones referred to by Canon M'Clure.