f lifting loads friction and compression which up to 8 tuns at the rateof results in causing it to become extremely hard, and of a& na- about 25 feet perminute. The ture well suited for the subse- details of arrangement are shown in the engraving. The quent rifling. We learn from a wellknown speed… … Sennen 7S have a cogged wheel inside, j —shells burst in their bores— appeared to lose nothing in worked by the hydraulic gear, for revolving the crane within point of accuracy of fire. In estimating the relative cost of steel bronze guns with those the circle of the roller path ;the other rollers…
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