16 
KBPOET— 1847 - 
with an excess of water diffuses only five portions of heat instead of, as in the 
above law, six. We have previously seen that the maximum of contraction 
for the more concentrated acid is also greater than, according to that law, it 
should be. 
For such a discontinuity in the law which determines the quantity of heat 
it is difficult to see ajiy grounds, and, as we previously have shown (Toble V.), 
it does not exist in the maxima of contractions, as Uiese with sufficient accu* 
racy can be calculated by formula (5.). If now the quantity of heat in 
Table VIII. is calculated according to the same formula 
..(13.) 
it will be seen that these values, even for the concentrated sulphuric acid, 
only slightly differ from the observed. The values of a and which best 
agree with all the observations in Table VIII., are the following:— 
a - 0'3082668 (1 + 0-204882) \ , , 
b = 313-0209 (1 + 0-02367) / . 
from which we obtain 
Table XII. 
n. 
W observed. 
W calculated, 
Difference. 
2 
134-20 
135-60 
— 1-40 
3 
94-18 
94-62 
— 0-44 
4 
77-23 
72-66 
+ 4-57 
6 
46'94 
49-62 
— 2-68 
1 
229*41 
239-26 
— 9-S5 
to 3-154. 
— • Zf Oil 
of a single observation according to this formula 
St according to the hynotliesis nf Hms it is eoual 
W = ^ _ ^ 
alculated m lable XU. above. ^ ^ accurately reproduced, which ar 
