"The rate of the taxes of compensation is not fixed in any definite manner. The support of foreign capital ought to be placed, with commercial freedom, amongst the most useful aids to the spirit of enterprise, whether it has reference to the exe- cution of works of public interest or whether it has in view the development of the cultivation of the natural products of the African soil. But capital only goes, in general, to places where the risks are sufficiently covered by the chances of profit. The Commission has therefore thought that there would result more disadvantages than advantages from binding too strictly, by restrictions arranged in advance, the liberty of action of public powers or of concessions. If abuses should arise, if the taxes threatened to attain an excessive rate, the cure would be found in the interest of the authorities or of the contractors, seeing that commerce, as experience has more than once proved, would turn away from establishments the access to, or use of, which had been rendered too burdensome."