will again plunge per or beater, which strikes eight times with every revolu- varieties of currents—the intermittent, the pulsatory, and into the midst of these vagrant bodies. People who are cu- tion of the crank, against the under part of the screens, and the undulatory. The first are… … doubtless be interested in the invention herewith illustrated, board which can be raised or lowered to regulate the flow of D. C. Bell and Mr. Griffin from the Dominion office in Brant- sand to the machine. Lis a shelf for carrying off coarse which is adapted for screening sand and separating…
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![An illustration from Cosmographia Francisci Mavrolyci Messanensis Sicvli : in tres dialogos distincta, in quibus de forma, situ numerʹoq[ue] tam coelorum q[uam] elementorum, alijsq[ue] rebus ad astronomica rudimenta spectantibus satis disseritur (1543)](https://img.insideoutlibrary.com/img/200/ia-cosmographiafran00maur-177-0.webp)
