518 Flame i?i Gas and Petrol Motors. [Feb. 22, 



as it is to-day. The results so far, are most satisfactory, as is shown by 

 the many thousands of engines continually in operation, both fixed and 

 locomotive. Much, however, remains to be done, and the immediate 

 problem to be faced is the application of such engines to marine 

 work. Although my sympathies are thoroughly with the abstract 

 scientist, and I appreciate tlie abstract scientific interest in such prob- 

 lems as I have discussed to-night, yet the practical side absorbs most 

 of the time of the engine designer and inventor dealing with flame 

 as the working fluid; so that there is plenty of room for investi- 

 gators, both physicists and chemists, in this promising field. 



As one who has given thirty years' study to the practical and 

 scientific problems involved in this matter, it is exceedingly gratify- 

 ing to find a great and increasing interest in the subject, which will 

 lead to the complete investigation of the complex properties of the 

 working fluid. 



[D. C] 



