The soap is from this again grained off or salted out, and the underlye so thrown down carries with it coloured impurities which may have been in the materials or which arise from contact with the boiler.
Slates alternating with gritty bands), the cleavage is most perfect in the finest grained rocks.
The wood is fine grained and satiny.
This conception of the grained structure of matter is very ancient; traces of it are to be found in Indian philosophy, perhaps twelve centuries before the Christian era, and the Greek philosophers Democritus and Epicurus, in the 3rd and 4th centuries B.C., taught it very definitely.
They are dark blue-grey, fine grained and durable, and are much used for flagging and kerbing and for sills, caps and steps.
There are no upper canines; and the cheek-teeth are short-crowned (brachyodont) with a peculiar grained enamel, resembling the skin of a slug in character.