The Wealth of Nations by Part 4 Chapter 7 Page 37

The progress even of the Spanish colonies, however, in population and improvement, has certainly been very rapid and very great. The city of Lima, founded since the conquest, is represented by Ulloa as containing fifty thousand inhabitants near thirty years ago. Quito, which had been but a miserable hamlet of Indians, is represented by the same author as in his time equally populous. Gemelli Carreri, a pretended traveller, it is said, indeed, but who seems everywhere to have written upon extremely good information, represents the city of Mexico as containing a hundred thousand inhabitants; a number which, in spite of all the exaggerations of the Spanish writers, is, probably, more than five times greater than what it contained in the time of Montezuma. These numbers exceed greatly those of Boston, New York, and Philadelphia, the three greatest cities of the English colonies.