SULPHURIC ACID AND WATER. 281 
noting the number of seconds which each took 
to cool 40°. The following table shows the re- 
sults of his experiments. 
Time of 
> 
ite} 
lon) 
Stir . . . - 
ort CO to +t +b = 
By subtracting the 215.5 seconds (the time 
the empty flask took to cool) from the numbers in 
the preceding table, he obtained the ratios of 
the specific heats of equal volumes of the mix- 
tures. And, by dividing these numbers by the 
specific gravities of the various liquids, as given 
in the first table, he obtained the specific heats 
of equal weights of each. His following table 
shows these specific heats of equal weights, that 
of water being unity. 
QN 
