ENGINE No. 85. 



Four-valve (Corliss) cross-compound, 24" and 34" x 48". 

 Speed, 61 revolutions per minute. 



In this engine the governor operated on the cut-off of the 

 high-pressure cylinder. The cut-off of the low-pressure cylin- 

 der was under the control of a pressure regulator set so as to 

 maintain a constant pressure in the receiver, irrespective of the 

 load or other conditions. Steam was withdrawn from this 

 receiver for heating purposes ; in this case for the heating of 

 feed-water for the plant of boilers which supplied the engine, 

 and the diagrams given were taken under two conditions of 

 running ; first, Xo. 85 a, when all the steam was used for 

 power, and second, No. 855, when the steam was withdrawn 

 from the receiver as noted. 



311 



