There are lessons perhaps in the growth of Turin from its little ancient chess-board to its modern enlargement, but such developments are rare.
The great benefit to modern workers of such a survey as I have attempted is that it shows the slow and painful steps by which mankind became at last able to plan towns as units, yet inhabited by individual men and women, and that it emphasizes the need for definite rules and principles.

Nor is it perhaps quite superfluous to-day to point out how closely, even after the great upheaval of the nineteenth century, the forms of modern life depend on the Roman world..