Her displacement is 8,457 tons, her indicated horse
power is 4,652, and her speed 14.4 knots. She has coal carrying
capacity for 700 tons, and her crew numbers 706. The thickness of her
armor belt is 8.66 in., that protecting the central battery is 6.29
in. thick, which is also the thickness of the transverse armored
bulkheads, while the deck is 0.43 in. in thickness. The armament of
the Colbert consists of eight 10.63 in. guns, two 9.45 in., six 5.51
in., two quick firing guns, and fourteen revolving and machine
guns.--_Engineering._
* * * * *
A compound locomotive, built by the Rhode Island Locomotive Works, has
been tried on the Union Elevated Railroad, Brooklyn, N.Y. The engine
can be run either single or compound. The economy in fuel was 37.7 per
cent, and in water 23.8 per cent, over a simple engine which was
tested at the same time. The smoothness of running and the stillness
and comparative absence of cinders was fully demonstrated.
* * * * *
STEAM ENGINE VALVES.
[Footnote: Lecture delivered at Wells Memorial Institute, Boston, in
the Lowell Free Course for Engineers. From report in the _Boston
Journal of Commerce_.
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