The Bounds of Bodies are less evident, as they are seen at a greater distance: This is a Maxim that can never be repeated too often; it being the Foundation of a rule of the last importance, viz. that the Contours of Objects must be drawn more or less strong, as they are more or less remote. Now the termination or boun ding of one thing upon another, is in reality no more than a Mathematical Line; not having the Properties of a Physical one: Neither can the Term between two Colours be properly called a Line, the one beginning, where the other ends; without the interposition of any other thing. Learn therefore, never to be too coarse in your Contours; but especially where the Objects are supposed at a distance; Nature, which is every where else to be followed, being not here to be departed from.