e last thing before their de-parture; for though each house would be thoroughly pro- EXPEEIMENT WITH AN AIE LOCOMOTIVE ON THEELEVATED BAILBOAD. In October last an interesting experiment with the Hardieair locomotive was tried on the Third Avenue ElevatedRailroad, a run being made from the 128th… … END ELEVATION OF AIK LOCOMOTIVE. station, was 115 pounds. We give herewith the best repre-sentation of the engine that has come to our notice, and fur-nish detail views that will afford a good idea of the workingparts of the machine. Pig. 1 is a perspective view, and Fig. 2 shows the posi-tion of…