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.