Report of Commissioners Relative to Encroachments in the Harbor of New-York

Report of Commissioners Relative to Encroachments in the Harbor of New-York

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1857 edition. Excerpt: ...this independently of the dynamic force resulting from pressure, first described. This position is strengthened by the remarkable experiment of Venturi, affording " a direct evidence of the efffect of adhesion which enables the particles of water in motion to catch up and carry in their train, those which are contiguous to them in a fluid mass at rest," (ibid): for this must apply a fortiori, to a fluid mass the particles of which have a motion in the same direction, though not so great, as those of the main body. Nature has happily furnished in the Hell Gate passage itself, a most satisfactory practical illustration of these theoretical views, which, however, it must be understood, do themselves rest on sufiicient experiments and observations, and are theoretical in the sense only of explaining the mode in which well known physical effects, the result of compound actions, are produced. The illustration is in Little Mill rock, one angle of which is steep, and resembles somewhat the walls which it is proposed to build on the Gridiron and the Bread and Cheese. Vessels running through the middle channel on the ebb, steer directly for this rock, as if it were their aim to run on it, and are carried safely and swiftly by. It is a common saying, that " you can't hit Little Mill rock if you try;" and in this we have a complete exemplification of the means by which the great hazards of the shoals projecting from Flood. Bock and Blackwe1l's Island, (the former of which is the most da.nger, ous, ) can be fully and permanently overcome. We may be thought, to exaggerate these hazards, and to over estimate the importance of the works We are recommending, and yet if another accident should occur like that of the Oregon...
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Product details

  • Paperback | 102 pages
  • 189 x 246 x 5mm | 195g
  • United States
  • English
  • black & white illustrations
  • 123681598X
  • 9781236815989