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Pipes Of Communication For Water

They may be used under water, but must be a little thicker in the

paper than those for land. Having rolled a sufficient number of pipes,

and kept them till dry, wash them over with drying oil, and set them

to dry; but when you oil them, leave about an inch and a half at each

end dry, for joints; as, if they were oiled all over, when you come to

join them, the paste will not stick where the paper is greasy: after

the leaders are joined, and the paste dry, oil the joints. These pipes

will lie many hours under water, without receiving any damage.