SEMAINE D ETUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. 727 
a) National Cabital € 
National capital is equal to the global value C of all repro- 
jucible goods, whether production goods (factory buildings, 
>quipment, semi-finished products, stocks), or durable consumer 
soods (dwelling houses, durable household goods, motor vehi 
cles, etc.). 
This definition is of course the definition which is normally 
ased by statisticians in work on the estimation of national 
wealth, so that 
116-1) 
hx 
b) Consumed National Income 
In the present theory, consumed national income 1s -jual 
to the global value of all final services. If, as is or course 
necessary, consumer durables are included in capital C, the 
value of the services rendered by them, », must be included 
in the calculation of Rc. The income arising from a capital 
goods is given by 
116-2) 
vie) — 
alt, 
Ue, 
where a is amortization, v the value of of the good at instant £, 
and 7 the instantaneous rate of interest (2). This relation sig 
(') Subject to a number of secondary differences which will be discussec 
ater (§ 334, table on page (115). 
(?) ALLais, Traité d Economie Pure (Treatise on pure economics) (1943) 
362. relation 2. and Economy and Interest (10947), p. 70, relation ? 
1.1] Alluis - pag. 31