109 



hrough magnetic friction was 5.74 HP. 

 ?he total commercial efficiency at full 

 Dad, when the alternator is driven by a 

 elt, and inclusive of the power required 

 Dr exciting, is given by the makers as 

 7 per cent. When driven direct by a 

 igh-speed engine, the efficiency is 

 lightly greater, as there is no increase of 

 )urnal friction by reason of the strain in 

 be belt. 



DISCUSSION. 



Sir George B. Bruce, President, said 

 le paper was evidently the work of a 

 erfect master of the subject of which he 

 'eated, and he was sure that the mem- 

 ers would award the author a vote of 

 lanks for so valuable a contribution; 

 or did he think that he was sanguine 

 l anticipating that it would give rise to 

 very important discussion. 



Mr. Gisbert Kapp was afraid the mem- 

 ers had found the paper somewhat dry ; 

 at he had asked several friends to 

 aable him to render the proceedings a 

 ttle less dry by lending him some appa- 



