taining the vacu- ing, in circumstances a thousand ways, may take place. For um it is essentially different, for in place of the almost un- example, the locks on the Erie canal were built in the most limited supply of water at a considerable pressure, which the expensive manner—to last forever.… … Inthe engraving, however,the buckets are placed in greater the figure, steam is raised in the boiler A; this, passing Oo oe number at certain places than at others, to show that the through the tube, D E, to G, issues with violence from the noz- Edgerton’s Improvement in Gas KRetorts. roller shafts…
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