Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 327
Castelvecchio Bridge, Verona. Fig. 27. … Devils Bridge at Martorell. and the top of the large arch, which has an opening of 145 feet,is held down by a chappel. The large arch has two superposedarch-rings and a third one near the upper part of the arch, whichdiverges from the other two at a point about one-third down from Sept., 1922.]…
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