leather board. and then extends back to the other end of the boiler and which is across the extremity, as shown at B, Fig, 4. The plates of It consists in this jacket are connected by stays, C, and the inner plate is riveted to the boiler shell, at D, Fig. 2. The outer plate ex- The leather in the… … proofs that its term of usefulness to the human race is ended, ner plate of the jacket. This is shown more clearly in Fig. then somebody is seriously mistaken. Let it be considered 1. The bridge wall is also a water back, connecting with the water space of the boiler by the tube, G, Fig. 4. It will…
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