Memoirs of the most eminent American mechanics : also, lives of distinguished European mechanics : together with a collection of anecdotes ... relating to the mechanic arts : illustrated by fifty engravings (1852)
Howe, Henry, 1816-1893, New York Museum of Science and Industry. Library · New York : Harper & Brothers · leaf 442
LONGITUDINAL SECTION OF THE THAMES TUNNEL, Showing its course under the River. … VERTICAL SECTION OF THE THAMES TUNNEL, Exhibiting the method of conducting the Work. DESCRIPTIONS, ETC. 435 to precede the body of the Tunnel, was put up at the depth of fortyfeet. The shield consists of twelve parallel frames twenty-twofeet high. These being divided into three stories, present…
Industrial arts · Inventors
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
