ugh through the hop- have been found to wear away with unexpected rapidity. per, 5, and pass out through the opening, c, which is Large numbers of mills have been erected on the general guarded by a strainer, d. : plan of the one represented in the annexed engraving, In consequence of the rotation… … are accompanied with engravings executed in the highest degree of mence the manufacture of retorts, and with good pros- perfection. pect of success. Although, at the present time, but com- To the Mechanic and Manufacturer the SCIENTIFIC AMERI- CAN is important, as every number treats of matters…
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