an iron thimble driven into the end of each piece.

A few years ago the writer took up more than 2000 ft. of wood pipe of
this kind, which had been laid in saturated soil about a century
earlier. It was of Southern pine logs, about 16 in. in diameter, 14-1/2
ft. long, and had a 5-in. bore. Joints were made with tapering cast-iron
ferrules 9 in. long, and connections to smaller service pipes were made
with similar but smaller ferrules of cast brass. The wood was apparently
as sound as when it was first laid.

The use of flat iron for wrapping or banding pipe is believed to be
wrong in principle. Round iron furnishes the requisite strength with the
least exposure to corrosion, and ensures a more perfect contact with the
wood.

In a 42-in. stave pipe laid by the writer for the Water Department of
Atlantic City, N.J., the lumber used was Washington fir, cypress having
been found difficult to procure in sufficient quantity, and redwood
being more costly and no better. In this, his experience coincided with
that of the author. Cedar was considered, but could not be obtained in
sufficient lengths or quantity, and long-leaf pine which would have
passed the somewhat rigid specifications would have been difficult to
secure. It is believed, however, that there is a field at least for
long-leaf pine for such construction. Washington fir was found admirable
in every respect, and was moderate in cost at that time.

The bands were bent in the field, and, after heating in an oven for
about 3 min., were dipped in bunches of five into a kettle of melted
mineral rubber at a temperature of about 400° Fahr., and then hung up
for the coating to harden. This took place rapidly, as the work was done