Note 65 — CHAP. IX. (continued 2)
Reading edition
The measurement annexed to each of the fifteen ancient provinces was taken from the maps that were constructed by a very laborious and, as far as we had an opportunity of comparing them with the country, a very accurate survey, which employed the Jesuits ten years. I do not pretend to say that the areas, as I have given them in the table, are mathematically correct, but the dimensions were taken with as much care as was deemed necessary for the purpose, from maps drawn on a large scale, of which a very beautiful manuscript copy is now in his Majesty's library at Buckingham-house, made by a Chinese, having all the names written in Chinese and Tartar characters.