averaging thirteen coaches. It has been seen that the Cheshire lines
express between Liverpool and Manchester is one of the fastest in England,
and the Manchester, Sheffield, and Lincolnshire Railway Company, who works
the trains, has just introduced a new class of engine specially for this
and other express trains on the line. The cylinders are outside, 17½ in.
diameter and 26 in. stroke, with single driving wheels 7 ft. 5 in.
diameter, the leading and trailing wheels being 3 ft. 8 in. diameter. The
total wheel base is 15 ft. 9 in., and the frames are double, giving
outside bearings to the leading and trailing axles, and inside bearings to
the driving axle. The boiler is 11 ft. 6 in. long and 3 ft. 11 in.
diameter, and the grate area is 17 square feet. The heating surface is in
the tubes 1,057 square feet; fire-box, 87 square feet; total, 1,144 square
feet. The tractive force per pound of mean cylinder pressure is 88.4 lb.
The weight in full working order is, on the leading wheels, 11 tons 3
cwt.; driving wheels, 17 tons 11 cwt.; trailing wheels, 11 tons 18 cwt.;
total, 40 tons 12 cwt. This engine is remarkable for the great weight
thrown on the driving wheels, and its cylinder power is great in
proportion to its adhesion, thus allowing the steam to be worked at a high
rate of expansion, which is most favorable to the economical consumption
of fuel. There are numerous fine engines running on other lines, such as
the new bogie locomotives on the North-Eastern and Lancashire and
Yorkshire railways, and the coupled express engines on the Caledonian; but
those already described represent fairly the lending features of modern
practice, and the author will now notice briefly the two other classes of
engines--tank passenger engines for suburban and local traffic and goods
engines. The Brighton tank passenger engine is a good example of the
former class; it has inside cylinders 17 in. diameter and 24 in. stroke.
The two coupled wheels under the barrel of the boiler are 5 ft. 6 in.
diameter, and the trailing wheels 4 ft. 6 in.; there are single frames
with inside bearings to all the axles. The boiler pressure is 140 lb., and