508 Mr. A. W. Warrington on 



For V there is besides a little uncertainty on account 

 of the correction for loss of Aveight of the hydrometer 

 by use. 



Experiments 10, 11, and 24-32 give, for the weight neces- 

 sary to totally immerse the hydrometer, the expression 



W + «;=A + B(^-5) + C(£-5) 2 , 

 where 



A = 101-94654 + -000,031); B = +-001,3513 ±-000,024; 



C=- -00 1,1288 + -000,020. 



The expression for the volume becomes 



V = A' + B'(c-5) + C'(£-5) 2 , 

 where 



A' = 161-94956 + -000,150, B'= + -003,8760 + -000,018, 



C'= +-000,001,20 + -000,000,45. 

 We find 



? = + -000,008,34, x = - -000,006,970, 

 ~= + -000,023,93, ~= +-000,000,007, 

 | " j, = " -000,015,59, ~,~ C i = + -000,006,98, 



Hence 



B _B' 



"U' a) 

 |l = + 442, |l = -988, 5l=-011, 



^ = -442, Jg = + 988, U = + .011. 



