Draw any thing you may fancy on a thin white pasteboard; then prick it; afterwards put the same on an horizontal surface, which we will suppose to be another pasteboard. Put a lighted candle behind that drawing, and draw on the horizontal surface the lines given by the light: this will give a deformed design. This being done, take away the drawing that was pricked and the candle; then place your eye where the light was, and you will see your drawing assume a regular form. CHAP. IV. _To change the Colour of a Rose._ Nothing more is wanting to change the colour of a rose, whether it is on its stalk or not, but to burn some sulphur under it; which will make it turn white, and it will not regain its primitive colour in less than two hours. CHAP. V. _To render hideous the Faces of all the Company._ Dissolve some salt and saffron in some spirits of wine; dip a little tow in it and set fire to it. At this light, those who are of a fair complexion will appear green, and the red of the lips and cheeks turn to a deep olive colour. CHAP. VI. _Method of Engraving in Relief on the Shell of a new-laid Egg._ Chuse an egg that has a thick shell; wash it well in fresh water; then dry it very carefully with a linen cloth; this being done, put some tallow or fat in a silver spoon; then hold it on the fire; when the fat is melted and very hot, it will serve instead of ink for drawing with a new pen whatever you like. This being finished, you are to take the egg by the two ends between two fingers, and then lay it gently in a tumbler filled with good white wine vinegar; wherein, after remaining for three hours and an half, the acid of the vinegar will have eaten enough of the thickness of the shell; and as it cannot have the same effect on those places that are covered with the fat, all the drawing will have preserved its thickness, and will form the relief that is wanted, the operation sought for. By this means one may draw on an egg a coat of arms, a mosaic piece, medallion, or any other design whatever. CHAP. VII. _How to shoot a Swallow flying, with a Gun loaded with Powder, as usual; and after, to find Means to bring it to life again._ Load your gun with the usual charge of powder, but instead of shot put half a charge of quicksilver; prime and shoot: if your piece bears ever so little near the bird, as it is not necessary to touch it, the swallow will find itself stunned and benumbed to such a degree, as to fall to the ground in a fit. As it will regain its senses in a few minutes, you may make use of the time by saying, that you are going to bring it to life again; this will astonish greatly the company; the ladies will no doubt interest themselves in favour of the bird, and intercede for its liberty: sympathizing with their feelings for the little prisoner, may be the means of some of them sympathizing with yours. CHAP. VIII. _To make a Calve’s Head bellow as if alive, when dressed and served up._