thickness of two fingers breadth; and if it be a great piece you must impose cross wires strengthning the Mold, least it be bent or broken. Afterward one part being hardned with the heat of the Sun or fire, take away all that from the Globe, and put it on some hollow thing, on which it may on all sides stand well, and also sprinkle quick lime or the powder of coals on the other side, and put upon this the other part of the pattern, and again expose it by degrees, to be dryed by the heat of Sun or fire, lest it crack; which done, take away the ends making those parts of the Mold or pattern from the inward or middle, which ends set one against another to the inward parts, the distance at least of a hands breadth, and put between in the top a few live coals to harden the Mold all over; to which put on other coals, and then more, and so by degrees even to the top, that they may be well kindled in their lighter parts; but if the Molds are very thick, one fire will not suffice, but it will be necessary to add more coals, until they be throughly kindled in the inner parts; afterward, let the fire go out by degrees, that the types may grow cold, but not altogether, but so that you may touch them; and presently besmear finely the sifted ashes mixt with water, with a pencil, to stop up the chincks arisen from the burning the hair, and for smoothing the types; then again make both parts (after thou hast first framed a hole in them for a Tunnel) clean, being wary lest any foul thing fall upon them; and carefully bind them together with iron or copper wier; and very well lute over the joining with clay prepared with hair; and put on an earthen Tunnel, and place the Mold in dry sand up to the top: And thou oughtest in the mean while thou burnest and preparest the Mold, to melt the metallick mixture, that it may be poured into the hot Mold, the Metal being well melted, cast in a bit of searcloath, which burning, pour out the melted Metal into the hot Mold, being wary lest coals or some other thing fall into the crucible, and be poured with the Metal into the Mold, spoiling the glass; then let the glass cool of it self in the Mold, if the matter do not moulder in the cooling: And if it should moulder in the cooling, which indeed would lessen it, it behoves that the cast glass be presently taken out of the Mold, and covered over with a hot earthen or iron vessel, that it may cool under it, which otherwise, cooling shut up in the Mold not being able to moulder, is broke in pieces, but a little below you shall perceive, what be those mouldering metals. And this is the common way (and the best) of melting, if so be thou art exercised; there are also other ways; first, when molds are made of wood or lead, agreeing to the glass, to be impressed with sand, or the finest powder of tyles or other earth, as is the custome of copper-smiths; and this way only serveth for lesser glasses.