To explain the uses of the other bay [which seems to connect the water in the fore-ground with the water in the distance], I must take the liberty to describe some effects in perspective, not, I believe, generally attended to in gardening. PERSPECTIVE, in painting, is known to be of two kinds; the first is called linear perspective, and is that by which objects appear to diminish in proportion to the distance at which they are viewed: this I have here already mentioned, in referring to the use of cattle as a scale of measurement: a horse, a cow, or a sheep, is very nearly of the same size, and with this size the mind is perfectly acquainted; but trees, bushes, hills, or pools of water, are so various in their dimensions, that we are never able to judge exactly of their size, or at what distance they appear to us.
