Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 82
nsible for the cracking. Their ex-amination of the crystal structure at the fissures led them to term thecause hydrogen disease, on the assumption that hydrogen given offby a chemical change of the sodium carbonate under heat and pressurehad attacked the cement binding the crystals together. While… … Figure 2An actual photograph of an cmbrittlement crackmagnified to 100 diameters. This gives an idea of themicroscopic dimensions of the fissures which the inspectorsfind with the aid of the periscope. 7o THE LOCOMOTIVE Mr. company at Urbana. Then, at about the same time, a violent explosiontook…
Locomotives · Steam-boiler explosions
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