ENGINE No. 49. 197 



Engine No. 49 is a cross compound horizontal engine with 

 jacketed cylinders, and a jet condenser operated by a direct con- 

 nected air-pump. The jacket spaces are of the kind which allow 

 the steam to pass through them before entering the steam chest 

 of either cylinder, and the water of condensation drains to waste. 

 Steam is supplied from water-tube boilers through a pipe about 

 100 feet in length, which is trapped near the throttle valve. 

 Steam lost by condensation in this pipe, and that used for cer- 

 tain heating purposes, was determined independently, and 

 allowed for. The front-end steam valve of the high-pressure 

 cylinder leaked badly. With this exception, the valves and 

 pistons throughout were in fairly good condition. The load 

 was cotton machinery. 



Considering the proportion which is borne by the steam 

 accounted for to the feed- water consumption in the high-pres- 

 sure cylinder, the result of this test, 14.18 Ibs. per. I. H. P. 

 per hour, must be considered as an exceptionally good per- 

 formance. 



