Pneumatic pile driving...
SCIENTIFIC AMERICAN, New York, February 9, 1850 The front cover has "Potts' Pneumatic Pile Driving for Forming Foundations, for Piers, Embankments, &" and "Allen's Alphabetical Spelling, Reading and Arithmetical Table". Inside the issue is Improvements in Apparatus for Making Mould Candles"; "Shark's Tooth found in Pease Creek, East Florida"; and more articles, illustrations and advertisements.
This is complete in 8 pages with some lite rubbing on the front page as well as a couple holes at the centerfold line, otherwise is in good condition.
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