time they are most parts of spelter, 4 parts of wrought iron and 2 parts wanted, their employment has not been general. of tin. The iron is placed in the crucible first, with We here illustrate a motive power for driving the copper upon it, and then exposed to a very high OF THE churns, which we… … stirred thoroughly, then allowed to stand for about those pursuits being published from week to week. Useful and prac- tical information pertaining to the interests of millwrights and mill- two minutes, when it is stirred again and poured owners will be found published in the SciENnTIFIC AMERICAN,…
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