The cheapest class of papers are the “pulps”. These are goods where the natural colour of the paper forms the ground upon which a pattern, in one or more other shades, is printed.
“Grounds” are a rather better quality, in which one colour is laid all over the paper and the pattern is printed over that ground in other colours.
“Sanitaries” are printed in oil colours and can, therefore, be sponged if necessary. If they are varnished they can be washed or even scrubbed.
There is a class of paper largely used for ceilings called “ micas”, from the fact that the pattern is printed with white mica powder, which has a sort of satin sheen. There are also other classifications too numerous to mention here.