tion to several novel features of Monongahela to Dam No. 1, a distance of 6% miles, construction, possesses an interest as being the largest, means of the Pasqueau ‘‘hurter.” This ingenious de- This makes a depth of 12 feet at the dam and miles. ends, which rests upon the bottom of the river. 27… … This is then drawn forward until the - rants the systematic improvement of prop falls into thenotch in the hurter, the river in every possible way. The the wicket proper remaining all the time like a feath- brought into requisition when the lock is first used or dam at Davis Island is an…
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