The power of form applied to geometric tracery : one hundred designs and their foundations resulting from one diagram (1851)
Billings, Robert William, 1813-1874 · Edinburgh ; London Published by the author by William Blackwood and Sons · leaf 31
at class. Supposing*^ for the sake of arg-ument^ it be admitted thatthey were first designed^ and then reduced to a g-eometricprinciple or calculation^ it is after all only the minor partsto which the observation can possibly apply^ for all arebased upon one unvarying* foundation; and this compels…
Decoration and ornament · Geometrical drawing
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