Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 190
ich there are no courses and no pinners. The joint ofeach stone is carefully fitted to those beneath it. For rubble-work, all varieties of sound stone are used, and of almost any size. In drywork, for foundations and for heavy revetment-walls, the stones are laid with derricks,but they must have… … MATERIALS. Bush Hammered. Axed.
Mechanical drawing
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