ENGINE No. 47. 187 



A noticeable feature of these results is the systematic in- 

 crease in the steam consumption per H. P. per hour as the 

 receiver pressure was raised. This may have been due to the 

 increased leakage of the L. P. steam valves. 



A comparison of the jacket tests reveals a gain due to the 

 jackets of 0.24 Ibs. per H. P. per hour, or about 2%. Although 

 this is not a marked difference, it is evident from an analysis 

 of the diagrams that the jackets had a considerable effect upon 

 the distribution of the steam, especially in increasing the 

 power developed by the L. P. cylinder and the quantity of 

 steam accounted for by the diagram for that cylinder. 



