The successive testimonies of Pliny, Aristides, Claudian, Rutilius, etc., prove the insufficiency of these restrictive edicts. See Lipsius, de Magnitud. Romana, 1. iii. c. 4.
__Tabulata tibi jam tertia fumant;
Tu nescis; nam si gradibus trepidatur ab imis
Ultimus ardebit, quem tegula sola tuetur
A pluvia. Juvenal, Satir. iii. 199.