furnished with a spindle, supported by a stuffing-box, B', and carrying
a fly-wheel, G. The central pipe, F, is perforated with a number of
small holes. The gas entering by the pipe, A, makes its way into the
central pipe through the openings in the plate, E, and passes into the
cylindrical case through the small holes in the central pipe, which
carries the brooms, H. These are caused to rotate rapidly by means of
the pulley, I; and thus a constant shower of water is projected into the
cylindrical case. When the gas has been several times subjected to the
washing process, it passes off by the pipe, K. Fresh cold water is
supplied to the vessel by the pipe, L; and M is the outlet for the
tar.--_Journal of Gas Lighting_.

* * * * *




THE WIND MILL.

[Footnote: A paper read before the Engineers' Club of St. Louis, 1884.]

By JAMES W. HILL.


In the history of the world the utilization of the wind as a motive
power antedates the use of both water and steam for the same purpose.

The advent of steam caused a cessation in the progress of wind power,
and it was comparatively neglected for many years. But more recently
attention has been again drawn to it, with the result of developing