40 THE ATRIUM VESTZ. 
originally intended for storerooms, or have formed a dark passage’ like that 
adjoining them towards the west. 
The Shops: At this period the street on the north was spanned by arches 
resting on concrete pillars, which were built against the travertine posts of 
the first period. By the addition of these pillars the street became 1.80 
meters narrower. The level both of the street and of the shops was raised, 
especially towards the east, where the street is 2 meters above the level of 
the republican remains below.* On the east a new wall was built in front 
of the earlier shops.* 
Architectural Details: The height of the rooms on the north can not be 
determined. The corridor and rooms on the south, however, which were 
covered by vaulted ceilings, were 7+ meters high. The archways by which 
the rooms were connected with the corridor were but a little lower.” Though 
the upper floors of the hypocausts, upon which the pavements were laid, 
are still left in many of the rooms, the pavements themselves have almost 
wholly disappeared. Those found in several of the rooms on the south are 
of a later period. A part of the pavements which are preserved in the mez- 
zanino may be, however, original. In the older room® on the south in which 
was built the stairway leading to the upper stories, there is still preserved a 
fine opus sectile pavement, which is often assigned to this period, though it 
belonged more probably to that of Hadrian.” 
In the room on the north adjoining the entrance-corridor is a hypocaust 
55 centimeters high, which was built at the same time as the rooms them- 
selves.* Hypocausts of a similar type were, it is probable, built under the 
other rooms, though at a higher level.® In the new rooms on the south, also, 
hypocausts were built throughout, raising the level of the whole group to 
that of the group on the east. In several of the rooms the double floors of 
the hypocausts are still preserved. In the corridor, unfortunately, they have 
been destroyed, though traces of them still remain. In the room farthest 
toward the east a second hypocaust has been placed on top of the earlier 
1The door and windows do not belong to the 
earliest period, but were cut out of the 
wall later. 
2 Cf. plan C and see pp. 18-19. 
3 See plate vi, fig. 1. The level of the street is 
shown by the height of the concrete founda- 
tions of the pillars, which were added at this 
time. 
*Plan D, m’-m”. 
5 The archway into the kitchen (plan D, 32) was, 
possibly before the completion of the build- 
ing, replaced by a small door. Traces of 
the earlier archway are, however, still to be 
found, though its width can not be deter- 
mined. 
6 Plan D, 36. 
7 From the traces which remain it is probable that 
the hypocaust under which the pavement 
was found is not later than this period. 
The pavement itself, therefore, must be 
earlier. In type also it agrees perfectly 
with the pavements which are usually as- 
signed to the time of Hadrian. 
8In building the walls of this room, the bonding- 
course which is at the level of the lower floor 
of the hypocaust has been so laid as to allow 
the tegule bipedales to project beyond the 
wall. On the shelf, so formed, has been 
placed the outer row of supports for the 
upper floor of the hypocaust. 
®The hypocaust still to be seen in one of these 
rooms is of a much later period. 
