s fitted on the "White Star line"
vessels, the Germanic, Britannic, Oceanic, Baltic and Adriatic, and on
the steamers of the "Compagnie Generale Transatlantique," the Ville de
Havre, Europe, France, Amerique, Labrador, Canada. The vessels of the
New York and Bremen line have the same class of engines, built in
Greenock, Scotland.

Amid so large a mass of machinery one can but select the most prominent,
and among these we may choose such as, while not necessarily imposing in
size, are suggestive of ideas which we may find valuable for home
introduction. Appleby & Sons lead the world in the completeness and
capacity of their great cranes and lifts for docks and wharves,
machine-shops, erection of buildings, and travelling cranes for railways
or common roads. We must make one exception--the elevators for hotels
and warehouses, in which America is in advance of all other countries.
While we have many varieties of these, we must give credit where it is
due, and the _ascenseur Edoux_ of Paris is the original of all those in
which the cage is placed upon a plunger that descends into a vertical
cylinder into which water is forced to elevate the plunger, and from
which it is withdrawn to allow the plunger and cage to descend. Very
fine specimens of this class of elevator are in the New York Post-office
building. The gantry crane of Messrs. Appleby Bros. of London is the
most complete engine of its kind in the world. It was originally
constructed for the growing requirements of the docks of the
North-eastern Railway Company of England at Middlesborough. The term
"gantry" is applied to the movable scaffold or frame, which in this case
rests upon a pair of rails twenty-three feet apart, one of them being
close to the edge of the quay. The clear height is seventeen and a half
feet, which allows the uninterrupted passage of locomotives and all
kinds of rolling-stock on each of the two lines of rails which are
spanned by the gantry. The crane is designed for a working load of five
tons, with a maximum radius of twenty-one feet from the centre of the
crane-post to the plumb-line of the lifting chain, with a capacity for
altering the radius by steam to a minimum of fourteen feet. The crane
has capacity to (1) lift and lower; (2) turn round completely in either
direction simultaneously with the lifting and lowering; (3) alter the
radius by raising or lowering the jib-head; (4) travel along the rails
by its own steam-power. All these moti