The Wealth of Nations by Part 5 Chapter 2 Page 163

fixation of this surplus assessment was left altogether to his discretion. In that year, indeed, the council assumed this power to itself. In the capitation of the provinces, it is observed by the perfectly well-informed author of the Memoires upon the impositions in France, the proportion which falls upon the nobility, and upon those whose privileges exempt them from the taille, is the least considerable. The largest falls upon those subject to the taille, who are assessed to the capitation at so much a pound of what they pay to that other tax.

Capitation taxes, so far as they are levied upon the lower ranks of people, are direct taxes upon the wages of labour, and are attended with all the inconveniences of such taxes.

Capitation taxes are levied at little expense, and, where they are