70 
or putting V for the volume 573 cub. in. of the discharging 
vessel 
S=-7l'^e (21) 
where t is the time. Or since td^ = 5 lbs., 
( 22 ) 
substituting the value of in the first six experiments 
table 1, we have — 
V. 
V 
K 
Velocity ^ 
at orifice. 
U 
135 ... 
825 
... 1022 ... 
650 
130 ... 
826 
... j, 
125 ... 
835 
... ,, 
n 
120 ... 
820 
... ,, 
115 ... 
810 
... ,, 
>» 
110 ... 
790 
... ,, 
)) 
For the first three 
of 
these experiments K 
is nearly con- 
stant showing that the conduction of heat could have but 
slight if any effect, but the effect is decidedly apparent in 
the next three. 
Proceeding now to the other extreme, and assuming that 
the temperature, after undergoing some diminution, remains 
constant, we have 
^_Q 
or integrating 
I0gpi-l0g^2 = ^l0ge, 
from which taking the last three experiments in Table 2 
P 
K 
V ^ 
' n 
pi 
4 .. 
,. 95 .. 
. 1022 
650 
3 ., 
,. 98 .. 
... ,5 
2 .. 
89 .. 
I . jj 
.... 
