This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 Excerpt: ...overgrown with vegetation, and strewn with stones, or detritus of any sort," or "with beds and banks in bad order having irregularities and deposits of "stone and much overgrown with vegetation "--with this value of n we have the volume of discharge 133 900 cubic feet--and the table given, when extended to include this ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 Excerpt: ...overgrown with vegetation, and strewn with stones, or detritus of any sort," or "with beds and banks in bad order having irregularities and deposits of "stone and much overgrown with vegetation "--with this value of n we have the volume of discharge 133 900 cubic feet--and the table given, when extended to include this value, and omitting the results of the Eytelwein formula for rise, will be as follows: The map accompanying the paper is deemed to offer ample evidence of irregularities and vegetation, while the description of page 444 indicates detritus and deposts of stone. It will be remembered, also, that on the trial the Lackawanna Company claimed that these irregularities were such as could not be compared with any other stream which had been gauged under similar conditions, and that a reliable computation must be based upon observations at a place comparable with some experimental site. The reviewer in "Engineering News," referring to the Elmira case, says that the Lackawanna expert selected ' the bridge crossings at Elmira, "of which there are three of varying lengths, and a mill dam, in the dis"tance, on the river of little over half a mile. Whether "he used one bridge or all three, or the slope resulting from the "combined obstacles of the locality, or finally what was the degree of "roughness allowed for in the Kutter formula," he does not know. As the points mentioned were given in the evidence they could easily have been ascertained. It is hardly necessary to say that these insinuations are uncalled for. The observations were made in an unobstructed, straight portion of the channel, and the co efficient of roughness selected after careful examination of the site and comparison with othe...
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