366 PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA - 28 
Thus, we find for the percentage of the primary income 
which is embodied in investment a figure which is of the same 
order of magnitude as the figure which is given by the pre- 
ceding analysis. 
b) From Tables 8 and 9, some 5% and 20% of primary 
income emerge in consumed income during the following quar- 
ter and year. These estimates seem also perfectly compatible 
with the figures for the composition of the labor force given 
above. 
But it should be stressed that analyses based on considera- 
Hon of the breakdown of the labour force, given the present 
state of the analysis must be considered as very rough, and 
of indicative value only. 
Determination of the Function «(0) 
335. It does not appear to be absolutely impossible to deter- 
mine the function (6) from an analysis of the composition of 
‘he working population and available data on the structure 
of production, at least on an approximative basis. 
Unfortunately, this calculation involves a great deal of 
work, and up to now I have not been able to find the time to 
do it, even though the results of such an analvsis would clearly 
oe of the greatest interest. 
It may well be, and in the author’s view it is quite likely, 
that over the useful range of variation of 8 i.e. from o to 100 
years, the exponential form 
(335-1) 
p(0)- Le © 
A 
11] Allais - pag. 170