The formation of the lower part is Nubian sandstone, that of the upper part is a hard dark-grey crystalline limestone belonging to the Neocomian period, and full of fossils.
Numerous operations of luting, sizing, lacquering, polishing, drying, rubbing down, and so on, are performed by the nurimono-shi, until, after many days treatment, the object emerges with a smooth, lustrelike dark-grey or colored surface, and is ready to pass into the hands of the makie-shi, or decorator.
Hence the weakness and the dark-grey fracture of this iron, and hence, by brushing this fracture with a wire brush and so detaching these loosely clinging flakes of graphite, the colour can be changed nearly to the very light-grey of pure iron.
The other three sides are formed by a retaining wall, varying in height with the slope of the ground from 14 to 41 ft.; on the west side a magnificent double stair, of very easy steps, leads to the top. On this terrace are the ruins of a number of colossal buildings, all constructed of dark-grey marble from the adjacent mountain.
A third genus, Eupetaurus, typified by a very large, long-haired, dark-grey species from the mountains to the northwest of Kashmir (Eu.