368 R. Clausius on the Application of the 
By the addition of these four single quantities of work, we 
obtain the whole work done during the circular process, namely, 
in + , 
(35.) W=mB(— + log -) —v'(1-«) (64+ p,)—Me (p,-p,). 
31. It is only necessary to divide the foregoing value by m, 
if we wish finally to refer the work to the unit of weight of 
steam, instead of to a single stroke of the piston, during which 
the quantity of steam m is acting. For this purpose, we will 
denote by 3, the fraction = which represents the relation of the 
whole mass which passes into the cylinder, to the portion of it — 
~. in the form of steam, and which is consequently somewhat 
greater than 1; furthermore by v the fraction as that is the 
space which is offered on the whole to the unit of weight of steam 
in the cylinder, and by the fraction sn” oF the work correspond- 
ing to the unit of weight of steam. Then we have 
(x) W=2(— BE log )- Ae! —8) (6 +Po) a lo(p,; — Po): ‘ 
In this equation, there ocurs only one term which depends upon 
the volume v, and it contains v as a factor. As this term is neg- 
