Perspective practical, or, A plain and easie method of true and lively representing all things to the eye at a distance by the exact rules of art ... / by a religious person of the Society of Jesus ... ; faithfully translated out of French, and illustrated with 150 copper cuts ; set forth in English by Robert Pricke ...

For the Shadow of Figures by a Torch.

IT is to be believed, that my counsel will be followed that one should not turn over the leaf for to learn the order which followeth; before they understand and remember well, that which went before Wherefore supposing that one understands well the order, that I have given at 139 fol. for to find the shadow by the Sun, for all the figures of such postures as they may be: I have nothing to say for these, see∣ing that the line below, which I make to serve for the plane, and all the other measures are taken jn one, as in the other. But because that the Torch doth not render an equal shadow in breadth to the body that giveth its shape, as doth the Sun: We must take this advice, which is, that instead of drawing the llnes parallels, that one to the other, as they are in the shadows taken from the Sun, we must draw them all from the same point, as from a Center; that is to say, that all the lines, which are drawn by the plane, must be drawn from the foot of the light A, and those above, and about the figure must be drawn from the point of fire B, in like manner as in all the other orders of the Torch, the which maketh me leave the rest, that would be but tedious repetitions, seeing that the figure expresseth it of its self.

[illustration]