preparation and mixing are always moving upwards to the fusing furnace; and when manufactured, they are placed in the lears, and drawn downward by machinery towards the ware-house, packing-rooms, or cutting-shop; which arrangements prevent breakage, and unnecessary moving of tons of materials. Besides the above, are a steam-engine, shafts, laths, and tools in the cutting-shop, stoppering lathes, &c., so that the whole of the processes may be conducted on the same premises. A furnace for burning the sand, another for getting up the pots to the requisite white heat, preparatory to placing them in the fusing furnace, also form part of the establishment.

The erections, with fixtures and implements, for two ten-pot furnaces, capable of melting in each, per week, about 12,000 or 15,000 lbs. weight, (from which can be manufactured weekly into wares about 6,000 lbs.,) will cost from 12,000l. to 15,000l., besides the expense of the ground. Thus, extensive Flint Glass works in good situations may be estimated to cost about 20,000l.: they will be capable of making weekly about 12,000 lbs. weight of manufactured goods, half of which will have to be cut or stoppered; and the total annual returns at whole-sale prices may be estimated at about 25,000l.. With the exception of the pot-rooms and cutting-shops, all the processes of a Glass manufactory are conducted on the ground-floor, as it would incur great loss of labour to move heavy masses of material into upper rooms.

The management of Glass-houses in France and in England is uniform in the respective countries; but differs from each other very materially.

The French, work and fill continuously—that is, the whole of the workmen gather simultaneously out of two or three pots: these, when emptied, are immediately refilled with materials,