Calorific Power of various Liquids. 433 



36.464 ; and if we express the capacity of the water by 

 //>', as is usually done, the capacity of the above oil 

 ought to be expressed by the fraction 0.44172. 



These details must no doubt appear superfluous to 

 those who are versed in the higher branches of knowl- 

 edge, and who are accustomed to express the most com- 

 plete relations by algebraical signs ; but it must be rec- 

 ollected that the subject of which I treat is familiar to 

 few, and that it is necessary to explain with rigorous 

 accuracy the principles upon which the method em- 

 ployed is founded, as well as the manner of using the 

 apparatus which I recommend. 



On repeating twice the experiment made with pure linseed oil I 

 had as a result in one of these experiments a capacity for heat equal 



to o 4441 1 



and in the other equal to ...... 0.47193 



If to these two results we add that of the first ex- 

 periment, equal to ...... 0.44172 



we shall have as a mean result ... . 0.45192 



The following are the results of some experiments 

 made with other liquids. Olive oil furnished : 



Specific heat of olive oil. 



ist experiment 0.45944 



2d experiment ....... 0.43422 



3d experiment .... ... 0.42183 



Mean result . . . 0.43849 



Three experiments made with naphtha gave the fol- 

 lowing results : 



Specific heat of naphtha. 



1st experiment ...... 0.43408 



2d experiment ....... 0.39234 



3d experiment 0.41905 



Mean result . . . 0.41519 

 VOL. ii. 28 



