19 

 TABLE IV. 



ENGINE TESTS. 



Indicator card from Engine No. 

 85. 



1 using gasoline. 200 pound spring. M. E. P. 



Indicator card from Engine No. 1 using alcohol. 200 pound spring. M. E- 

 P. 85.6. 



Note: The gas engine indicator is an instrument for recording the pressures 

 in the engine cylinder at all points to fthe stroke of the piston. The indicator 

 cards or diagrams shown above are samples of the cards obtained by a gas en- 

 gine indicator during the tests. 



