138 
PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA - 23 
inputs and equal to ®. Then we have from (116-12), (110-1), 
(II0-2) and $ 111. 
(116-25) R=Rc=R,=R, = 4 
The sequence of events in this case can be represented by 
the following figure, which is the same as that demonstrating 
the movement of a fluid in a conduit. 
Entry into 
the capitalrstic 
process 
Exit From the 
rapitalistic 
process 
Production 
persrod 
= 
Movement of inout- 
Supply of 
any factor 
input 
dppearance of 
the rfactor 
moult 
This shows that all factor income R,dt arising between 
t-© and #-©+dt appears between # and #+dt and that in 
the case of this process it is true that 
(116-26) R=R.=R.=R.=A =|. 
‘11] Allais - pag. 42