30 R. Clausius on the Application of the 
second equation the temperature 7',, then from the third the tem- 
perature 7’,, and these we eT apply in the first equation to 
the determination of the work, 
In this process we m ay however, a ag we oe In or- 
3 fro 
venient for the present purpose, and if not for all temperatures, 
at least within certain intervals, sufficiently accurate. I wi 
however, here make such attempts, but instead of them will di- 
rect attention to another rocess in which iy calculation, it is 
I ought age ‘for thie peuee to have differentiated the 
formulas whic ult has used to calculate the single values 
of p below and anaes 100° ‘cording to t, and by means of the 
new formulas thus obtained to have calculated g. As however 
these formulas do not answer their purpose so completely as to 
make this tedious labor worth while, and as the establishment 
Piss joe 
ts with sufficient accuracy ne value of the differential 
coefficient for the mean temperature 147. 
