and small cylinders through the tubes, _u¹_ and _u²_.

Mr. Farcot has recently adapted this type of motor to the direct
running of electric machines that are required to make 400 revolutions
per minute.--_Publication Industrielle._

* * * * *




IRON AND STEEL.


At the recent meeting of the Iron and Steel Institute, London, the
president-elect (Mr. Bernard Samuelson, M.P.), delivered the following
inaugural address:


THE WORLD'S PRODUCTION OF PIG IRON.

He showed that the world's production of pig iron has increased in
round numbers from 10,500,000 tons in 1869 to 20,500,000 tons in 1882.
The blast furnaces of 1869 produced on the average a little over 180
tons per week, with a temperature of blast scarcely exceeding 800°
Fahr. The consumption of coke per ton of iron varied from 25 to 30
cwt. To-day our blast furnaces produce on the average upward of 300
tons per week.

The Consett Company have reached a production of 3,400 tons in four