The book Annual Report of the Cochituate Water Board 1852 was written by author Boston (Mass.). Cochituate Water Board Here you can read free online of Annual Report of the Cochituate Water Board 1852 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Annual Report of the Cochituate Water Board 1852 a good or bad book?
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7. 25 iron conduit at Cherbourg, constructed between the years 1836 and 1838, of white casting, about 2460 me- tres (nearly \ X A miles) long, had become everywhere coated with tubercles, which in some places had an ele- vation of from 4 to 5 centimetres, (1.575 to 1.968 inches,) so that the orifice of the pipe which was, when laid, 18 centimetres (about 7 inches) in diameter, had been reduced to less than one-third its original section. The consequence of the diminution of the orifice, join- e...d to the enormous loss of head occasioned by the ad- ditional friction, had deprived many of the work-shops at the end of the conduit of a supply, prevented the simultaneous playing of the fountains, and made the supply of the grand reservoir impossible, or very feeble. The tubercles were very broad at their base, and very strongly adhering to the surface of the pipe, and could not be removed, except by heating the pipe to a red heat, or by a forcible action of an instrument. They were of a greenish brown color, and testaceous structure, and on exposure to the air, assumed the color of yellow ochre, a sure sign of the oxidation of part of the iron which entered into their composition.
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