Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 364
vance D, (to be presently explained,) and then forms a flat spiral B, asshown in Fig. 82, in the roof of the oven, where the coils are distant fromeach other little more than t \e diameter of the tube. From this spiralit is carried again outside of the masonry to the point d, seen in bothfigures;… … 348 PARIS UNIVERSAL EXPOSITION.
Machinery · Scientific apparatus and instruments
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