Antique gems and rings . ANTf(.)(E OKMS AN!> WOODCUTS IN THE TEXT OF APrENDTX. Title Fage.—Mars aud Venus caught in Vulcans net: cameo, of which a fulldescription has been given at p. 428. The drawing of this masterpiece of technicalskill (itself a masterpiece for fidelity and exquisite finish) has been made to the scale ofone and a half of the measurement of the original. This nominal, not real enlarge-ment, was the only possible method of transferring to pajier the effect of the original upontlie eye, as may be proved by mathematical demonstration, thus:—In any figure inhalf-relie
Antique gems and rings . ANTf(.)(E OKMS AN!> WOODCUTS IN THE TEXT OF APrENDTX. Title Fage.—Mars aud Venus caught in Vulcans net: cameo, of which a fulldescription has been given at p. 428. The drawing of this masterpiece of technicalskill (itself a masterpiece for fidelity and exquisite finish) has been made to the scale ofone and a half of the measurement of the original. This nominal, not real enlarge-ment, was the only possible method of transferring to pajier the effect of the original upontlie eye, as may be proved by mathematical demonstration, thus:—In any figure inhalf-relief the area of its whole surface exceeds by one-half the area contained within itsown outline. Now when a draughtsman attempts to draw an object in relief to what hecalls the actual size, he begins by taking the exact limits of this outline to contain allthe details of the figure, which details are thereby actually reduced in size, in the sameproportion from those in the relief itself. Hence the finished drawing has the appear-ance of being much sm
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectclassicalantiquities
