levated railroads and taken down at structed some time ago. The first of these (Fig. 1) consists distance between the pole of each arm and the lower arma- of a soft iron ijeedle mounted on a horizontal axis movable stations, and Paris, which is in its sewers, we can say that ture of the… … surcharge imposed on the balajice, the benefit resulting from the main office must be considered. This would greatly the increase of the mechanical action of the current. But it narrow their use. The expense for digging the trench for is necessary to remark that the weight of the entire movable one…
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