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Scientific American, Vol. 92, No. 15 (April 15, 1905) (1905)

leaf 15

An illustration from Scientific American, Vol. 92, No. 15 (April 15, 1905), 1905, leaf 15
APRIL 15, 1905. … tions of various sorts, and follows this with Concrete block making apparatus, hollow, THE MIETZ & WEISS KRROSENE W. G. Hughes ..... ccc csc cece cece cceee 786,566 information on stone laying, setting, and cut- Sizes from Concrete building block molding machine, ting; marble and slate work;…

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