8 s Count Rumford's Inquiry concerning 
0Z - : 
/erjqi t 
im/ 
?’*3n 3 
-f'W -p 
taking equal quantities, by weight, of these chips, and of thin 
slips of the same block of metal separated by means of a fine 
saw, and putting them, at the same temperature, (that of boil- 
ing water,) into equal quantities of cold water, (that is to say, 
at the temperature of 59°-|- F.) the portion of water into which 
the chips were put was not, to all appearance, heated either 
less or more than the other portion, in which the slips of metal 
were put. 
This experiment being repeated several times, the results 
were always so nearly the same, that I could not determine 
whether any, or what change, had been produced in the metal, 
in regard to its capacity for heat, by being reduced to chips by 
the borer.* 
From hence it is evident, that the heat produced could not 
* As these experiments are important, it may perhaps be agreeable to the Society 
to be made acquainted with them in their details. 
One of them was as follows : 
To 4590 grains of water, at the temperature of 59°! F. (an allowance as compen- 
sation, reckoned in water, for the capacity for heat of the containing cylindrical tin 
vessel, being included,) were added ioi6i grains of gun-metal in thin slips, separated 
from the gun by means of a fine saw, being at the temperature of 2 io° F. When they 
had remained together 1 minute, and had been well stirred about, by means of a small 
rod of light wood, the heat of the mixture was found to be zz 63°. 
From this experiment, the specific heat of the metal, calculated according to the rule 
given by Dr. Crawford, turns out to be = 0.1 100, that of water being zz 1.0000. 
An experiment was afterwards made with the metallic chips, as follows : 
To the same quantity of water as was used in the experiment above mentioned, at 
the same temperature, {viz. 59°|,) and in the same cylindrical tin vessel, were now 
put 1016- grains of metallic chips of gun-metal, bored out of the same gun from 
which the slips used in the foregoing experiment were taken, and at the same tempe- 
rature (210 0 ). The heat of the mixture, at the end of 1 minute, was just 63°, as 
before; consequently the specific heat of these metallic chips was = 0.1100. Each 
of the above experiments was repeated 3 times, and always with nearly the same 
results. 
