Nature and their Mutual Dependence. 15 



ture T' are compared, we have, agreeably to formula (28), 

 D" e" 



1 — 



D' 



(30) 



h lt D', e', as before, denoting the specific heat, the density, and 

 the heat developed through one atmosphere for one of the bodies, 

 and co n , D", s" denoting the magnitudes for the other fluid analo- 

 gous to co h D', e f . 



If co iP ~D n , and e" are known for one of the fluids, as, for ex* 

 ample, is the case with distilled water, in which 



1, B" = l, and e" = 



1 



36-57 



and if the amounts w / and D' are known for the other fluid, then 

 formula (30) serves to determine the degree of heat e' which 

 will be developed in this fluid by one atmosphere of pressure; 

 for we find -y 



6 ' = 86-57. D'.*,- (31) 



For the following liquid bodies I have in this manner deter- 

 mined the degree of heat e' which would be developed in case 

 these fluids were subjected to one atmosphere of compression : — 



Name of the fluid. 



The density. 



The specific 

 heat. 



The calculated 

 degree of heat e\ 



Distilled water . . 



1-000 



1-000 



(36-57) CelS1US - 



Sulphuric acid . . 



1-848 



0-335 



V22-647 



Alcohol 



0-793 



0-700 



V20 7 3(y 



Olive-oil 



0-915 



0-501 



\Vm) 



Mercury 



13-598 



0-0333 



( 1 } 



VliS-56/ " 



Sulphide of carbon. 



1-272 



0-329 



(l5-3o) " 



Bromine 



2-966 



0-135 



(l¥64/ " 



Sulphuric ether . . 



0-715 



0-550 



( 14-387 " 



Oil of turpentine . 



0-872 



0-426 



(mm) " 



