bed, sothat a team may be driven up one platform to the in the center. The piston heads are secured to pis- bed and from the bed down the other platform to the tons operated like the usual hydraulic pistons, the ground. A loaded wagon is thus driven up one plat- cylinders being supplied with water… … 10 to 15, melting point 350° to 450°; will drop to display the-word ‘‘empty,” but when any (5) tin 1,000, nickel 10 to 15, melting mail matter is placed in the box the platform is tilted point 350° to 450°; (6) tin 900, copper and the sign “‘ full” is exposed in the slot in the door. 100, bismuth 2…
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