421. Red Fading
he red, especially of vermilion, is the first to go, because that colour, together with some others, is laid on by the Chinese after burning.
422. Modern Porcelain Fades Less
The modern Chinese porcelain is not, indeed, so susceptible of this rubbing or wearing off, as vegetable reds are now used by them instead of the mineral colour.
423. Temperature with China and Glass
It ought to be taken for granted that all china or glass ware is well tempered: yet a little careful attention may not be misplaced, even on that point; for though ornamental china or glassware is not exposed to the action of hot water in common domestic use, yet it may be injudiciously immersed therein for the purpose of cleaning; and as articles intended solely for ornament are not so highly annealed as others, it will be proper never to apply water beyond a tepid temperature.
424. Annealing Glass