mpared with the ordinary marine steam engine is more than fifty screw, propellers of the ordinary type are employed, high price of the metal. That contained in the solder per cent, since a steam engine developing 50 horse- used in making the joints of the tin can be, and is, while in the second… … of the metal, as explained above. From the with %-inch pitch pine. Above the vessel, The "Spider," a Shallow-Draft Vessel Propelled by a Gasoline Motor. last tank of the series it is raised into the almost throughout its full length, extends a electrolytic vats by a pump constructed en- light…
