hrbuecher_, cxviii. 339; Barthel,
_ibid_. cxx. 105; Pianta di Torino (1-10,000), by G.B. Paravia.

[72] I take these figures from the plan of Paravia, which is said
to be the most correct plan of Turin at present available. Promis
gives smaller dimensions, 720 x 670 m., and he measured from what
is now known to be a point too far to the east (the Via Accademia
delle Scienze) instead of from the west front of the Palazzo
Madama; he has, however, been usually followed. Other maps give
other dimensions, Orlandini (1844), 758 x 780 m.; Vallardi
(1869), 680 x 740 m.; Maggi (1876), 730 x 800 m.; Ashby (Art.
'Turin' in _Encycl. Britannica_) gives 2,526 x 2,330 ft. which
must be too large. I reproduce here (fig. 15) the plan of
Orlandini, since it shows well the extent of street-survivals in
Turin before the great modern rebuildings or expansions.

[73] d'Andrade, _Relazione_, pp. 8-20; _Notizie degli Scavi_,
1885, pp. 173, 271, and 1902, p. 277.

Of the interior buildings of the town little is known. The Forum
perhaps stood near the present Palazzo di Citta, and the Theatre was
traced in 1899 in the north-east corner of the town, occupying
apparently, a complete insula;[74] of the private houses nothing
definite seems to be recorded.

[74] _Notizie_, 1903, p. 3.

But the street-plan has survived intact, except in two outlying
corners. The town was divided up into square or nearly square blocks,
of which there were nine counting from east to west and eight from
north to south. Most of these 'insulae' measured about 80 yds.
square.[75] A few were larger, 80 x 120 yds.; these were ranged along
the north side of the street now called Via Garibaldi (formerly Dora
Grossa), which represents the Roman main street between the east and
west gates--in the language of the Roman land-surveyors, the
_decumanus maximus_. This street cut the town into two equal halves.
The other divisions of the town were no less symmetrical. But, as
there were nine 'insulae' from east to west, the main north and south
street could not bisect the town. Indeed, the south gate seems to have
had five house-blocks west of it and four east of it, while the Porta
Palatina stands further west, with six blocks on the west side of it.
The north and south gates, therefore, are not opposite.[76] Whether
this was the original plan is not clear, nor is the age of the
surviving walls and gates quite cert