I336

Suppose A B a Painting, [Tab. 2. Fig. 2.] and let D be the Quarter, whence the Light proceeds; in this case, a Person placed between E and C, sees the Painting at a great disadvantage, and cannot possibly judge either of its Beauties or Defects; especially if it be Painted in Oil, or be covered with Varnish; because that, receiving a Lustre, will in some measure have the effect of a Mirrour: For this reason, the nearer you are to the Point C, the less will you see of the Painting; it being thither, that the Rays of Light, receiv'd in at the Window, are reflected from the Painting; but between E and D, you will be commodiously enough situated, to view the said Painting; and still in proportions as you approach nearer the Point D, your place will become the better; since you will there, be the least lyable to the annoyance of these reflected Rays.