perspicacious

[Latin perspicax (gen it. per spica cis ), from perspicio =to see through, to see clearly.] 1. Quick-sighted; sharp of sight. 2. Quick or sharp of discernment; acute. "It is as nice and tender in feeling, as it can be per. spica cio us and quick in seeing."- South : Sermons, vol. ii., ser. 12. per-spi-ca-cio us-ly, adv. [Eng. perspicacious; -ly. In a perspicacious manner; with quick sight *1. A telescope; a gla for viewing objects or discernment. through. IMG:content-0934.png:[blocks in formation] 1. The science of representing appearances, and as such is opposed to geometry, which is the science of representing facts. It is founded upon such rules as can be deduced from the facts which are discovered by looking at objects through a sheet of gla or other transparent medium placed upright between the object and the observer. This is indicated in the etymology of the word. It is found when objects are so looked at that their apparent form is very different from their real one, both as regards shape and distinctne . The portion of the subject which deals with the changes in form is absolutely scientific; it is called Linear Perspective. The changes in distinctne are effected by distance and atmosphere, and differ constantly with different conditions of light and atmosphere. It is the purely artistic side of the science which is called Aerial Perspective, and succe in its application depends upon the individual ability of the artist. The chief point with which Linear Perspective has to deal is the apparent diminution in size of objects as they recede from the spectator, a fact which any one can test by observing a long straight stretch of railway. The cro sleepers and the telegraph poles diminish in apparent size to the point of invisibility when they are far off on the horizon. It is the rules which govern such changes as these which are dealt with by Linear Perspective; while the fact that the same telegraph poles, black and brown and yellow when seen close, gradually put on a blue hazy color as they become more distant is one of the facts chin, bench; go, gem; thin, this;