The Wealth of Nations by Part 5 Chapter 2 Page 257

the neighborhood. It is to the alcavala, accordingly, that Ustaritz imputes the ruin of the manufactures of Spain. He might have imputed to it likewise the declension of agriculture, it being imposed not only upon manufactures, but upon the rude produce of the land. In the kingdom of Naples there is a similar tax of three per cent upon the value of all contracts, and consequently upon that of all contracts of sale. It is both lighter than the Spanish tax, and the greater part of towns and parishes are allowed to pay a composition in lieu of it. They levy this composition in what manner they please, generally in a way that gives no interruption to the interior commerce of the place.

The Neapolitan tax, therefore, is not near so ruinous as the Spanish one. The uniform system of taxation which, with a few exceptions of no