The Wealth of Nations by Part 5 Chapter 2 Page 103

The greater part of it was laid upon the country; and of what was laid upon the towns, the greater part was assessed upon the houses. What remained to be assessed upon the stock or trade of the towns (for the stock upon the land was not meant to be taxed) was very much below the real value of that stock or trade. Whatever inequalities, therefore, there might be in the original assessment gave little disturbance. Every parish and district still continues to be rated for its land, its houses, and its stock, according to the original assessment; and the almost universal prosperity of the country, which in most places has raised very much the value of all these, has rendered those inequalities of still less importance now. The rate, too, upon each district continuing always the same, the uncertainty of this tax so far as it might be assessed upon the