(Fig. 3), which has been specially manufactured for this purpose, has
three suctions and deliveries, one for circulating water, the second
for the condensed steam, and a third for the filtered drinking water,
so that the latter is kept fresh and clean.

The condenser and pumps are manufactured by Ernest Scott & Co., Close
Works, Newcastle on Tyne, and were shown by them at the late
exhibition in their town.

* * * * *




IMPROVED CURRENT METER.


Paul Kotlarewsky, of St. Petersburg, has invented an instrument for
measuring or ascertaining the velocity of water and air currents.

Upon the shaft or axis of the propeller wheel, or upon a shaft geared
therewith, there is a hermetically closed tube or receptacle, D, which
is placed at right angles with the shaft, and preferably so that its
longitudinal axis shall intersect the axis of said shaft. In this tube
or receptacle is placed a weight, such as a ball, which is free to
roll or slide back and forth in the tube. The effect of this
arrangement is, that as the shaft revolves, the weight will drop
alternately toward opposite ends of the tube, and its stroke, as it
brings up against either end, will be distinctly heard by the observer
as well as felt by him if, as is usually the case, the apparatus when