Manchester Memoirs, Vol. xlii. (1898), No. C. 51 



For the final value of K, the quantities given in 

 the appended table were obtained : — 





i 



-§ 



% 

 ^ 



•=-1 



*J c 



<U 3 c 



sol 



I7I5IO 



77710 



i 



c 

 c 



rt 



"1 



2^ 



II 



^' 



Q 

 140-5 



141-5 



7 



i' 





 



Means for 21 

 accepted 

 heavy trials. 



Means for 23 

 accepted 

 light trials. 



17817 

 17832 

 -15 



134337403 

 61355503 



4 



— I 



-7 



-3*9 



-5 4 



I '5 



6 



172685 

 78-867 

 93818 



8 



Mean differ- 

 ences. 



72981900 



93800 

 3 



3 



4 



6 



5 





I 



2 



A value of K is obtained by dividing the difference 

 of work in col. 2 by the uncorrected difference of heat in 

 col. 3. This operation gives 



Ki-7;8-o6. 



This value, however, wants correcting on account of the 

 quantities in cols, i, 4, 5, 6, and 7. 



( 1 ) Error hi balance of brake. 



It has been shown that the difference of 15 revolutions 

 in col. I will not, when the error of balance of the brake 

 is considered, have any appreciable effect in the value 

 of Ki given above. 



(2) Loss oj heat by leakage. 



In col. 4 this loss is given as 3 thermal units. The 

 correction to Ki is therefore— .,..}fx57y 



= —0-000032. 



