in the fiscal year ending upwardly through the smoke-stack. The construction hand, he closes all the acoustic tubes passing from, the June, 1902, they were the highest on record, being in of the steam nozzle is very simple, the device can be receiver to the indicator, except the one in front of… … cisely the same manner as is the custom at present. The apparatus consists of (1) a receiver of the waves STEAM NOZZLE FOR LOCOMOTIVES. of sound and (2) an indicator of the source of emission of the sounds. the index needle. If-then he hears nothing, it signi- Fig. I. Fiq. 2 . The receiver consists…
