e piece of ing is gently rubbed with slate. (Fig. 1.) After both sides of the slate have been the handkerchief, not too cleaned, the false flap is dropped onto the table, the hard, just enough to let side which is then uppermost being covered with cloth ii the powdered chalk fall similar to the… … MABX AND GASSNEB'S MAGAZINE CAMEBA. ing the audience, becomes suddenly covered with writ- ing, and the slate is immediately given for inspection. The writing is on the slate previous to the cleaning, barely covers the edge of the plate and is fastened to and is hidden from view by a flap of slate…
Torpedo · Fiber · Acetylene · Cotton · Slate · Torpedo boat · Feet · Hard spun · Forestry preservation · Scientific American · Long fiber · Years ago · West coast · Traction engine · Torpedo boats · Dark blue
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