43 2 On the Capacity for Heat, or 



evident that the bottle had acquired \i\ of heat ; conse- 

 quently, if we multiply 9.4 (the number which expresses 

 the sum of the capacities for heat of the bottle, and of 

 the cold water adhering to it) by 12^ we shall have a 

 product which will express the number of grammes of 

 water which would have been heated one degree by the 

 heat communicated during the experiment to the bottle, 

 and to the small portion of water which adhered to it. 



It is 94 X 12.25= 111-15 grammes. 



If from the heat lost by the vessel and the warm 

 water, which we have found equal to that which is 

 necessary for raising the temperature of 561.84 

 grammes of water one degree of F., . . . 561.84 grammes 

 we take the quantities which the bottle and the 

 water adhering to the bottle have received . . 115.15 



we shall have . . . '.-'.- . . 446.69 grammes 



of water heated one degree, expressing the quantity of 

 heat employed for raising to 12-^ F. the temperature 

 of the 82.55 gimmes of linseed oil which were put 

 into the bottle. 



On dividing this number (446.69) by ii\, we shall 

 see how many grammes of water would have been 

 heated one degree by the quantity of heat in question. 



It is therefore _ 36.464 grammes of water. 



By the results of this calculation we find that the 

 same quantity of heat which is necessary to raise the 

 temperature of 36.464 grammes of water 12^ degrees 

 of Fahrenheit's thermometer is sufficient to raise the 

 temperature of 82.55 grammes of oil the same number 

 of degrees. 



Consequently the capacity of water for heat is greater 

 than that of oil of linseed in the proportion of 82.55 to 



