sausages from the inside of the curve upon preceding rolls, so as effectually to exclude the air, leaving the substance of the sides from two and a-half to three inches thick; the dome is continued in the same manner, circle upon circle diminishing towards the centre. It is then left, and the air within becoming somewhat rarefied, supports the dome until the pot is sufficiently hard to allow of cutting open and finishing the mouth. Kneading by the naked feet answers better than kneading by a pug-mill or machinery; the latter was tried at the Falcon Glass Works on a large scale, scarcely a single pot out of fifty or sixty was capable of holding Glass. The weight of the human body, the elasticity of treading, and the warmth of the feet, probably expel the air from the clay, better than machinery.

When the pots are dry, they may be removed to a hot room of one hundred to one hundred and fifty temperature. Before setting in the Glass furnace, great care is necessary to anneal a pot in the arch; and a week or more should be allowed gradually to bring it to a white heat, ready for pot setting. This work is always performed towards the end of the week, and is a hot and fatiguing operation; all hands must be present, and absentees, except from illness, are severely fined. The men are provided with suitable dresses to shield them from the open blaze of the furnace. The old pot, being no longer useful, by age or accident, is then exposed, by pulling down the temporary brick-work; a large iron bar, steeled and sharpened at the point, is placed across another bar, to operate under the pot as a fulcrum; several men rest their entire weight upon the end of this long lever, and,