arising in streams which are not navigable, the dam being erected To the Editor of the Scientific American: the various processes of gas manufacture, although, upon property owned by the persons, upon condition Noticing a revolution counter in one of your recent perhaps, not specially pleasing to… … to all kinds of ailments, and formed a tened. It is wrapped in tissue paper SIMPLE MODE OF ASCERTAINING THE REVOLUTIONS OF A SHAFT. considerable proportion of the num- and then damped with three wrooden ber on the sick list; while among the pegs against a plate of very porous workmen specially…
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