SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. = 4! 
[t can be seen that primary inputs emerging in consumed 
income before a year has elapsed represent 209%, of primary 
income, but only 29, of capital. On the other hand, inputs 
which appear in consumed income after 5 years represent 719%, 
of capital, but 339 only of primary income. 
It will also be observed that by reason of the low values 
of p and (: - ç) the difference between the shares corresponding 
to consumed income and primary income remains relatively 
small; this is also true of capital and primary capital. 
For the same reason, the amortisation periods ©: differ 
relatively little from the ratios C#/RE. 
Finally, it can be seen that for small values of 8,, the con- 
tribution of primary income to capital is practically negligible. 
[f (334-13) is developed as a Taylor series, the main comno- 
nent of C% /C is seen to be 6; /2 ©2, 
4) These theoretical results help to explain the empirical 
figures obtained earlier (!) showing that the primary income 
incorporated in investment at any given moment represents 
32% of the total primary income of that moment, whereas 
the contribution of the different inputs of primary income over 
ime to reproducible capital is of the order of 90%, (?). 
5) To make an approximate assessment of the relation- 
ship between the empirical results and those in Table 8, we 
adopt the following hypothesis (H), bearing in mind that it is 
not rigorously verified, and indeed, can at best be only a 
rough assumption. The hypothesis is that primary inputs 
incorporated in investment can only emerge in consumed in- 
come after the expiry of a period 0°, whereas the primary 
‘nputs which enter stocks and goods in course of production 
1 3336. 
4) Each contribution representing 32°, of the primarv income of tha 
noment 
1 Allais - pag. 146