952 Transactions of the American Institute. 



Table B. — Variations in Speed under uniform Loads. 



Table C. — Yariations in Speed under Loads very suddenly 

 Varied. 



The results in regard to perfection of the regnhation is a point so 

 purely practical, that but little seems required beyond a faithful 

 exhibit of the actual results obtained. Table B shows the fluctuations 

 in velocity of the engines under uniform loads. The lever, it should 

 be understood, was subjected, during the experiments noted in this 

 table, to no change of load; and supposing the quantity of water 

 applied to the brake to be uniformly the same, and the resistance 

 due to the frictions consequently unchanging, the fluctuation in 

 velocity, amounting to some thirty per cent of the true speed on one 

 engine, may be explained only by supposing, what was reall-y tlie 



