, Carroll Co., 111. A is an iron pipe, or its equivalent, having flanges at B, and C is a slotted, double hollow cylinder, of Glass Brick Mold. copper or other suitable material. At D a hollow, A new mold for bricks is in use in Baltimore wedge-shaped cylinder, of steel or iron, is shown; which is… … half, they were naturally anxious to know the cause. alum in water. The alum may be dissolved in warm The device i s thus operated : the drill rod is screwed The Academy declined giving an answer until they or cold water, but should be used cold, applied with on at I, when the pipe, A, and its…
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