s equiva- are only 291 vessels of 98,760 tuns, a decrease of 88 inder ; but when the plunger, a, descends, the valve, Tent, and highly raised above its base, and having per- vessels and 12,604 tuns. This reduction has not been. ¢, closes, and the water which is displaced rises be- pendicular sides.… … flect of the United States now comprises 514 vessels of —Though very simple engraving would convey a 158,746 tuns. ‘There has been a total decrease of 141 thus offered to the descent of the plunger prevents clea idea of this invention, it is a mere waste of ships in four years. In 1858 two hundred…
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