Triple-phase alternating-current locomotive built by the General Electric Co.
for use in the Cascade Tunnel, of the Great Northern Railway

Heavy service, alternating and direct current freight locomotive built by the
Westinghouse Company for the New York, New Haven & Hartford Railroad

The monoroad in practical use for carrying passengers at City Island, New York

The cigar-shaped car of the monoroad

The locomotive that hauls the train goes to its “stall” in the roundhouse directly after its work is done. Its crews, having finished their run, desert it for the time being, and it comes within the charge of the roundhouse foreman and his “hostlers.” These old terms are reminiscent of the days when the roundhouse was a real stable and its denizens flesh and blood horses. Now the denizens of the roundhouse are iron horses, and in their great size as they rest within their house they are indicative of the progress that has been made in the design and construction of railroad equipment.

On the way to the roundhouse, possibly on the way from it (the practice varies on different railroads) the engine will stop at the ash-pit. It will have its fires cleaned in a long pit that runs underneath a section of track, and then pass on to the coaling-shed. The long pit at some points is filled with iron buckets that run on wheels into which the ashes are dumped and these are emptied by overhead crane apparatus into a nearby line of empty gondolas, ready to be taken away to be disposed of.