about 40 per cent with an equal stability. plates "to let them air." It was this "airing" which to our attention. The little engine, which is of the The system consists of a tower of which the walls marine triple-expansion type, was built by Mr. Robert caused the corrosion. Now when boilers are… … the most part a fraction less than 1-16 for its construction. of an inch in diameter; and yet each THE SMALLEST WORKING MODEL OF A TRIPLE-EXPANSION ENGINE. The external woodwork was removed is perfectly hexagonal in shape. The in the spring of 1904, and, up to the studs are a little less than 1-32…
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