Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . dls as they exhibit themfelvcs to the naked eye, and redu-cing thofe appearances to mathematical rules and theorems. Thepradiical part is an application of thele rules to the a6iual defcription of thofe appearances; the d(;ing of which, in a moft eafyand uniform manner, for all different cafes, is all that can beexpected from it. Without the knowledge of Perfpe£live a pi£f ure is drawn as i(were by guefs, without any certain determinate points or lines,or any other rules tha
Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . dls as they exhibit themfelvcs to the naked eye, and redu-cing thofe appearances to mathematical rules and theorems. Thepradiical part is an application of thele rules to the a6iual defcription of thofe appearances; the d(;ing of which, in a moft eafyand uniform manner, for all different cafes, is all that can beexpected from it. Without the knowledge of Perfpe£live a pi£f ure is drawn as i(were by guefs, without any certain determinate points or lines,or any other rules than the painters eye to guide him ; here thefhape and fituation of his obje6ts are not previoufly determined,but left at large to be modelled, as they may happen in the pro-grefs of his work to appear to ftand belt; this indeed is the toocommon way in painters work, as it allows them all kind of la-titude in their defigns, or rather permits them to paint withoutany fettled defuin at all, but as it fhall happen. If a figure, on|examination, appears too large for its diftance, it is by the ftrokei oil /^/.Z^ y/^z/VlX. PER i^t cf a pencil brought to ftand on nearer ground ; mountains are re-moved from place to place by raifing or lowering their founda-tions, till, at lalt, the painter fixes them as fuits beft with theirbulk and ftrength of colour which he firlt gave them. As he hasno fixed defign to work by, all he can do is to make his eye thejudge, and to correal what, on view, appears to him amifs ;but often, not knowing how to do it, he makes it worfe, and isobliged, after many unfuccefsful trials, to hide that part under aveil, or blot it quite out, and put fomething elfe in its place thatmay look better. As he is not fure of v/hat he really intends, heis obliged to keep others as much in the dark as himfelf, by in-duftrioufly avoiding all regular figures and ftraight lines, andleaving the boundaries of this objetft as uncertain as may be ;and thus at length the piece is fini
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Keywords: ., book, bookcentury1700, booksubjectarts, booksubjectindustrialarts
