uired a number. Subscriptions should begin with this Truss pad, Norris & Sweet. Packing, rod, W. Haas +6 266,031 for propulsion. Experiments on screws. The cause of number, and to enable new subscribers to com- the vibration of screws. Proper position of the screw. Tube. See Boiler tube. Wick tube.… … Wood, preservation 6f, R. G. Biirstenbinder...... 266,092 Plow, E J. Etzler........... . 466,121 LOCOMOTIVES.—PERSPECTIVE AND Plow, K. Kellogg .......... : cee ee . 266,164 detail views of the powerful class of locomotives con- Plow running gear, steam, J. M. Gardner.......... 265 956 structed by…
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