ure is im- parted to the clay, as in ordi- ’ nary machines, the bricks are Ni often defective in strength, \ \ " at the corners and edges es. \ \ pecially, and hence unsuit- ih \\ able for use as first quality : \ front or face bricks. These = We + LE \\ N serious objections have been : i\\ ’… … must be dried and granulated other machines. Bricks made by machinery have beencom-| The bricks possess remarkable density, hardness, and com: | to fill with any degree of regularity into the ‘ filler hoxes,” and monly deficient in strength, unequal in size and density. | pressive strength. thence…
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