A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 371
to end of each row, bind the spheres together.(See Fig. 111.) An example of another modern type in extensive use isgiven in Fig. 112, a semi-sectional boiler, which consists ofa series of inclined wreught-iron tubes, connected by T- 346 THE STEAM-ENGINE OP TO-DAY. heads, which form the vertical… … Fig. 112.—Babcock and Wilcoza Sectional Boiler. The fire is made under the front and higher end of thetubes, and the products of combustion pass up between thetubes into a combustion-chamber under the steam and waterdrum ; hence they pass down between the tubes, then oncemore up through the space…
Steam-engines
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