ENGINE No. 83. 



Canadian cross-compound engine, 20" and 36" x 42". Speed, 

 76 revolutions per minute. 



The high-pressure cylinder in this engine has Corliss valves 

 and the usual automatic cut-off. The low-pressure cylinder has 

 a plain slide valve with no means of adjusting the cut-off save 

 by shifting the eccentric. These diagrams show the effect 

 upon the distribution of the load between the cylinders pro- 

 duced by changing the low-pressure cut-off by the eccentric 

 adjustment. When the steam followed in the low-pressure 

 cylinder to nearly full stroke No. 83 a, the power developed in 

 the high-pressure cylinder was 167 H. P., and in the low-pres- 

 sure cylinder, 60 H. P. When the eccentric was advanced in 

 the low-pressure cylinder, No. 836, these quantities became 

 respectively 149 H. P. and 80 H. P. 



307 



