ffrntifte THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS. [NUMBER 48. VOLUME IX.] NEW-YORK AUGUST 12, 1854. IMPROVED QUARTZ! CRUSHING MACHINE. —Figure 1. SCIENTIFIC AMERICAN, WTHLTRHUn WUKLTa … resolved to accept the plan of tunneling the Chioago River as proposed by the American pulley, as shown. The lower basin is station- The machinery is placed within a strong The annexed engravings are a perspective Sub-Marine Tunnel Company of New York. It ary, but by the revolving cap, A, the balls…
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