Ruskin, John, 1819-1900 · Boston : Estes and Lauriat Publishers · leaf 149
to besolved by the arch builder is not merely to cany this weight,but to carry it with the least thickness of shell. It is easy tocarry it by continually thickening yourvoussoirs : if you havesix feet de2:>th of sand or gravel to carry, and you choose toemploy granite voussoirs six feet thick,… … ri.AlE 111.—AlU 11 Ma^^UMvV THE ARCH MASONRY. 139 thickness of voussoir which will be safe ; and to do this re-quires peculiar an-angement of the lines of the arch. Thereare many arrangements, useful all in their wfiy, but we haveonly to do, in the best ai-chitecture, Nvith the simplest andmost…
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