A thing wholly devoid of Light, is nothing but Darkness: Now the Night being of this Nature, to make any Nocturnal Representation, you must take care that there be a large Fire, to illumine your Objects; in the conduct of which, you must observe the following Rules: Those things that are nearest the Fire, must be the most tinged with its Colour, it being a Natural Property of Bodies, that the nearer they are to any Object, the more they receive of its Light, and the more they partake of its Colour; and as the Fire appears of a Red Colour, every thing illumined by it, must likewise be seen of a Reddish cast; this Redness always growing weaker, and partaking more of the blackness of the Night, in proportion as the Objects are farther removed from the Fire. As to the Figures, observe that those between you and the Fire, do not appear in the least illumined by it; for on the side that you view them, they are only tinged with the obscurity of the Night, there being no possibility of their receiving any thing from the brightness of the Fire: the Figures on either side shou'd appear half Red and half Black; and those seen beyond the Fire, must be all illumined with a Red Light, upon a Black Ground. As to the Attitudes, such Figures as are nearest the Fire, shou'd hold their Hands before their Faces, and Screen themselves from the scorching heat of the Fire with the Skirts of their Cloaths; turning their Faces the other way, as if they were about to fly from it: Those that are further from the Fire, shou'd likewise appear dazled with the Flame; covering their Eyes with their Hands, to shelter them from the too powerful Light.