teraattng with layers of stone like thecako 1 and jolly of jelly-cake—dilfer much in thick cane. The richest Is about twenty-seven fro: through. Some are so thin that the worldaf of them would not be productive— fheasineeareof two Blade. One kind begin* at the outcrop, whore the coal comes to the surface, and follow* down tho bed with a lung shaft, called ait "incline," an mat lanes Iff up snd sometimes ueariy horizontal, according to