Issue 25 and Volume 1893 13.

FIRE AND WATER EXPERIENCE talks at water-works conventions, although not always in the scientific order of procedure, are in many cases exceedingly valuable and a great help to water-works superintendents and others bent on acquiring practical information. Mr. Walker, superintendent at Manchester, N. H., says in thawing out a service pipe he caused to be dug a hole two feet deep and three feet across, in which was placed some lime and water, leaving it over night, and the next morning finding everything is all thawed out. We would have been glad to furnish our readers with additional information about the interesting method Mr. Walker has adopted for thawing out service pipes, but in the absence of it can only assume that the heat generated by the lime in contact with the water, was the medium which increased the temperature of the earth surrounding the frozen service pipe. Nevertheless we…

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