The laboratory, or, School of arts : containing a large collection of valuable secrets, experiments, and manual operations in arts and manufactures ... by Smith Godfrey 18th cent

Author:Smith, Godfrey, 18th cent
Language: eng
Format: epub, pdf
Tags: Industrial arts, Technology, Recipes
Publisher: London : Printed by C. Whittingham, for H.D. Symonds, J. Wallis, and Wynne and Scholey ... and Vernor and Hood ...
Published: 1799-03-25T05:00:00+00:00

and stir them well together to the thickness of a thin paste: you must be pretty nimble with this work, else it wijl harden under your hands, and be of no use,

To prepare the Mould.

Take the plant you design to cast, and spread the leaves and stalks so as not to touch one another; then make a coffin, either of lead or clay, and put your plant in it so as not to touch the sides; at the bottom you may lay a piece of paper to keep the stuff from sticking to the board, but let your stuff be neither too thick nor too thin, for if it is of a right consistence it will force itself close to the plants and come out sharp ; let the stalks be carefully kept up for the inlet; and when you pour this stuff upon vour plants, do it gently, and separate those leaves which might lie close to one another with a needle, pouring all the while, to make the mould the stronger. After this i$ hardened, put it in a drv place, and keep it until you have some more ready to cast; but you must secure it from frost.

If you would cast insects, or any small animal, or reptile, put them, in what position you will, upon a little board, brown paper, or paste-board, which first must be anointed with oil, to make the plaster-stuff come off the easier ; about your insect make a little coffin, and if you can raise the insect so as to be freed from the board or paper, it will be the better, which you may do by tying it with two or three hairs, and fastening them at the top of the coffin, by which it will hang in the middle ; when this is ready, pour, as before directed, your plaster gently upon it, and after the mould is a little dry, it will be fit for use.

If you lay your insect, or other creature, upon the paper, you must make a wall about it, and cast your plaster upon it; let it stand a little, and when dry, take of?

your

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