216 On the Capacity for Heat, 
Now as the temperature of the warm water in the cylindrical 
vase of copper was that of 59} before the mixture, and 26} after 
the communication of the heat had been obtained, it is evident 
that this water was cooled 23°. But if we multiply the number 
of grammes of water which the specific heat of this water re- 
presents, and that of the vessel =204-3 grammes by the number 
of degrees which it has been cooled (2;°) we shall have a pro- 
duct which will express the number of grammes of water, which 
would have been cooled one degree of F. by a loss of heat equal 
to that which the vessel and its contents supported im this ex- 
periment. It is 204°3 x 2°75 x 561°84 grammes. 
We shall now see what part of this heat was communicated to 
the bottle, and to the small portion of cold water attached to it, 
and what part to the oil contained in the bottle. 
As the temperature of the bottle and its contents was 44;° F. 
before the mixture, and 654° afterwards, it is evident that the 
bottle had acquired 124° of heat: consequently 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 123°, 
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. 
Tt is 9°4 x 12:25=115°14 grammes. 
If from the heat lost by the vessel and the 
warm water which we have found equal tc 
that which is necessary for raising the tem- 
perature of 561-86 grammes of water, one 
degree of Fe os ..vesseeencesceseeess-s 00183 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 em- 
ployed for raising to 12}° F. the temperature of the 82°55 
grammes of linseed oil which were put into the bottle. 
On dividing this number (446-69) by 12}, we shall see how 
many grammes of water would have been heated one degree, by 
the quantity of heat in question. 
BA ig ae =36'464 grammes of water. 
By the results of this calculation we find that the same quan- 
tity of heat which is necessary to raise the temperature of 36°464 
grammes of water 12 degrees and a half of Fahrenheit’s thermo- 
meter, is sufficient to raise the temperature of 82°55 grammes of 
oil the same number of degrees. 
Consequently 
