ng, it yields a quantity of oxyd of copper, from the same publication—the London " Jour- parative impunity in some of the hitherto most Now all this may be avoided by using a vessel which is mixed along with that produced from nal of the Society of Arts:"— pestilential districts of the world." the… … with charcoal or emptied at pleasure. The The readers of the " Scientific American, strate the practicability of using the wave pow- one wire-rope, a a, is used, starting from the respirator is kept in its place by an elastic band who take an interest in naval architecture, will er in moving…
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