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. 1886 Excerpt: ... to the Mersey Bar or to the approaches to Liverpool? The answer was, so far as he recollected the documents, that nothing had been done which was analogous to either of those things on the Seine. It had been proved to demonstration that the tidal-capacity of the Mersey had varied enormously within the last two decades ...
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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. 1886 Excerpt: ... to the Mersey Bar or to the approaches to Liverpool? The answer was, so far as he recollected the documents, that nothing had been done which was analogous to either of those things on the Seine. It had been proved to demonstration that the tidal-capacity of the Mersey had varied enormously within the last two decades. It had fallen since 1861 from upwards of 970,000,000 cubic yards to about 950,000,000 cubic yards, and it had risen to 960,000,000 cubic yards in 1881. That showed a decrease of between 20,000,000 and 30,000,000 cubic yards in the first decade, and a rise of Mr. Pember. 8,000,000 or 10,000,000 cubic yards at the end of the second decade. During that period of twenty years it was proved to demonstration that the height of the bar had varied, and by no means in proportion to the variation in the cubical capacity of the river; in other words, that the cubical capacity of the river by natural causes had gone down very much, while the bar had not increased, but had perhaps diminished; and, on the other hand, the cubical capacity had gone up again, whereas the bar had not varied in the direction of improvement, or at all events in the same proportion. He ventured, therefore, with the greatest deference, to suggest that up to the present time two things seemed to be in great uncertainty: First, whether, after all, the cubical capacity of an estuary had really that direct effect upon a bar at its mouth which some engineers thought it had; and secondly, whether any effect had been caused by the works upon the Seine analogous to the damage of the bar on the Mersey, or to any port in the position of Liverpool. Mr. Taunton. Mr. J. H. Taunton observed that as reference had been made by the Author to the Thames, the Metropolitan river, and as some slight ...
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