Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 190
MATERIALS. Bush Hammered. Axed. … IhM mm ii 1T3 itolliiiiipi iliiiiiii GRANITIC STONES. Granite and syenite are by builders classed as granites. The granite in general riftsin any direction, and works well under the hammer and points. From these circum-stances it is more desirable than the syenites, which are much harder to be…
Mechanical drawing
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