Page:Repository of Arts, Series 1, Volume 01, 1809, January-June.djvu/133

 r.ncw o(»i» the effects of the fire on Vessels in led with painting in rnnmcl, baking. No district could be more favourable to pottcrj before that art attained sufficient mei i( i" become an object of distant commerce, tV.r it abounds with a variety of colour- ii, to pa them d third Lh rough the Urc < )ne <>f '!:• in (Innis of iliis glass being lead, f 1m- workman; v. ii » e hand !.mil immci :n : inthi mixture. ed clays and of coal. Chesterton, i^ subject i<» paralisi . unless due pre* •mi ion be i then. To prei ml ii, the manufacturers bay* -i- terics, the latter having (m i  eral centuries been known to in- (In- Employment about their ovcus, principal seat of them, furnish them with a dress toweai Tor mukyig pottery, or earthen at Hie glazing tab, ami throw otr ware, (In' claj is beaten in water, when they leave it, and a * by which the fine parts are suspend* ' cistern, soap, and towels near them, 4-d in the fluid, . hile the coarser sink t«» the bottom of the vessel. The thick liquid is further purified by passing ii through hair and that ilny may be more certain, when employed in glaring, t<> wash their hands before they go to their meals. If is feared, however, that lawn sieves of different degrees of i an unhappy opinion of theelficacy fineness; and is afterwards mixed of spirituous liquors does more mi>- with another liquor of about the chief to this class of workmen than same density, consisting of ground any other circumstance, for attri- fiintst This was the composition buting to the effect of lead whatever of theivhite stone ware about forty slight disorder occurs, they have years ago, the staple manufacture recourse in the first instance to them, of tin* potteries of this kingdom : as specifics in such cases; and thus and it is also that of liner earthen ; acquire the habit of an immoderate wares at present in use, though in use of what probably affords thena different proportions, and av itli va- J a temporary relief, hut does not fail rions improvements introduced by to produce a permanent and d the ingenuity of succeeding menu- tive disease. This is we heli facturers. This mixture is then dried in a kiln, and after being beat* the sole opprobrium which att i to the potter's art ; j et even (his may en to a proper consistence, becomes be greatly diminished, it not en- fit for being formed hy the work-, tirely removed, by the precautions men into dishes, plates, howls, &c. The line white and cream-colour- ed earthen wares now mode in Eng- above-roentioned : h is it is desirable to preclude the 11 lead altogether, the Society for the land, are fired twice; the first time Promotion of the Arts lias offered to give them the requisite hardness, ;1 premium for a substitute for this and in that state they are called gla*e, or for a mode of u>i;i_ biscuit; they are then dipped in a which would not subject the 1 vitreous composition, and being • to these dangers. subjected to a second burning, ac- I The white and the* brov quire a coating of true glass, thence wares are passed only once tlir called a glaze. If they are imish- the tire; for, at a i of