Abstract
IN Section G, Mr. T. Forster Brown, an engineer well known in the locality in connection with mining industry, was the President. There was an average list of papers, but the discussions were not so full as is sometimes the case in this Section. As a consequence, the sittings were got through with more than ordinary speed; there being no meeting on the Saturday, and the whole business of the Section was completed by two O'clock on the Tuesday of the meeting. The President's address was given as usual on the Thursday, and referred to mechanical details in connection with mining. In character with the meeting it was brief. The usual vote of thanks having been moved and seconded, Prof. Osborne Reynolds proceeded to read the third Report of the Committee appointed to investigate the action of waves and currents on the beds and foreshores of estuaries by means of working models. It will be remembered that this Committee arose out of a paper read by Prof. Osborne Reynolds at the last Manchester meeting of the Association; and this, in turn, arose out of the investigations made upon a working model of the Mersey estuary in connection with the then proposed Manchester Ship Canal operations. The further investigations referred to in the last report have been conducted on the same system as previously described. The chief object of this series has been to obtain further information as to the final condition of equilibrium with long tidal rivers entering the head of a ∇-shaped estuary; to obtain more complete verification of the value of the criterion of similarity; to investigate the effect of tides in the generator diverging from simple harmonic tides; and to determine the comparative effect of tides varying from spring to neap. It would be impossible in this brief report of the proceedings of the Section to give an idea of the results at which the Committee arrived, or rather the results shown by the experiments, more especially without the aid of the diagrams by which the Report was illustrated.
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Mechanics at the British Association. Nature 44, 509–510 (1891). https://doi.org/10.1038/044509a0
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DOI: https://doi.org/10.1038/044509a0