282 



Mr. Dugald Clerk 



[Jan. 29, 



Fig. 8 shows in section the 22 hv 34 inches engine, and Fig. 9 

 shows the igniting arrangements. Ignition was h\ magneto and low 



Fig. 8. 



tension make and break. Two igniters were used, one at each side 

 of the charge admission port. The distance from the igniter centres 

 to the piston was 2 • 25 feet. 



Fig. 9. 



Figs. 10, 11, and 12 show diagrams from which the period of 

 explosion has been determined. 



