VOLUME X.] (NUMBER 31. and can be made inany compact and porta- THE ble form desired, so as to answer the purpose SCIENTIFIC AMERICAN, of a traveling secretary ; or can be attached Fig.1 PUBLISHED WEEKLY to, and forma part of, the ordinary office At 128 Fulton Street, N. Y. (Sun Buildings.) … Princeton College. per, and about one inch and a-half apart. are also bent upwards at right angles, as rep- a universal joint, (in mechanical effect exact- We learn froma catalogue recently issued, Between A’ and the bottom of the machine is resented in the engraving. These upward ly like the ball…
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