case everything is arranged in the most handy way for rapid working,
and six brass balls of 2 in. in diameter can be turned and finished in
an hour. The machine is specially adapted for turning ball valves for
pumps, pulsometers, and the like, and in the larger sizes for turning
governor balls and spherical nuts for armor plates, and is
manufactured by Messrs. Wilkinson and Lister, of Bradford Road Iron
Works, Keighley.--_Engineering._

* * * * *




COOLING APPARATUS FOR INJECTION WATER.


It often happens in towns and where manufactories are crowded
together, that the supply of water for condensing purposes is very
small, and consequently that it attains an inconveniently high
temperature under unfavorable conditions of weather, resulting in the
deterioration of the vacuum and a consequent increase in the
consumption of fuel. To remedy or to diminish this difficulty, Messrs.
Boase and Miller, of London, have brought out the water cooler
illustrated above. This consists, says _Engineering_, of a revolving
basket of wire gauze surrounding an inner stationary vessel pierced
with numerous small holes, through which the heated water discharged
by the air pump finds its way into the basket, to be thrown out in the
form of fine spray to a distance of 20 ft. at each side. The drops are
received in the tank or pond, and in their rapid passage through the
air are sufficiently cooled to be again injected into the condenser.