On July 14, Mr. W. S. Smith, Assistant Government Marine Surveyor, deposed to inspections he had made of the boiler of the Dojima Maru, Witness said he made his final survey on January 11 this year, adjusted the safety valve to 125 lbs. per square inch and locked them with padlocks, keeping the keys at the Harbour Office. On January 12, a ductility and elongation ce-efficient considerably inferior to that of the old shell, and a good deal below the minimum standard for boiler steel. chemical analysis showed the strip had a lower carven content than the shell by.03 per cent; this would give a lower tensile strength for the strip. as well as inferior hardness, as wi found to be the case on the Vickers Hardness testing machine at the Naval Yard. Another possible result of the lower carbon content may have teen the large size of the crystals of iron, The impact test: applied at the Naval Yard showed again the inferiority of the strip steel, which broke at 37 foot-pounds as against the shell steel's 50. Mr. Simpson's opinion of the strip was that it was a borderline" steel, only just suitable for its purpose. He was, however, unable to find actual microscopical evidence of the crystal cleavages P characterising fatigue fractures, the fracture was too much rusted.
Text read from the printed page and cleaned; old type leaves the occasional error.