ARCHITECTURAL PERIODS
43
which, from its similarity to that of the fourth period, may be
assigned to the end of the Republic ; again, walls with reticu-
late facing of tufa and corners of brick-shaped blocks of the
same stone belong to the time of Augustus (Fig. 12), while retic-
ulate work with corners of brick (Fig. 90) is of later date; but
there is a total lack of those distinguishing characteristics which
would serve to set off by themselves all the buildings belonging
to a particular time. Consequently in the case of each struc-
ture it is necessary to take into account all the circumstances,
Fig. 12.— Reticulate facing, with corners of brick-shaped stone. The filled arch is
probably to bear the weight of the wall over a sewer.
and then to form an independent judgment regarding its style
and date.
The difficulty is further enhanced by the fact that three styles
of wall decoration fall within the limits of the same period.
The Architectural Style, already mentioned, remained in vogue
to the time of Augustus; it then gave place to the third or
Ornate Style, which is characterized by a freer use of ornament
and the introduction of designs and scenes suggestive of an
Egyptian origin. The fourth or Intricate Style came in about
the year 50 a.d., and represents, with its involved and fantastic
43
which, from its similarity to that of the fourth period, may be
assigned to the end of the Republic ; again, walls with reticu-
late facing of tufa and corners of brick-shaped blocks of the
same stone belong to the time of Augustus (Fig. 12), while retic-
ulate work with corners of brick (Fig. 90) is of later date; but
there is a total lack of those distinguishing characteristics which
would serve to set off by themselves all the buildings belonging
to a particular time. Consequently in the case of each struc-
ture it is necessary to take into account all the circumstances,
Fig. 12.— Reticulate facing, with corners of brick-shaped stone. The filled arch is
probably to bear the weight of the wall over a sewer.
and then to form an independent judgment regarding its style
and date.
The difficulty is further enhanced by the fact that three styles
of wall decoration fall within the limits of the same period.
The Architectural Style, already mentioned, remained in vogue
to the time of Augustus; it then gave place to the third or
Ornate Style, which is characterized by a freer use of ornament
and the introduction of designs and scenes suggestive of an
Egyptian origin. The fourth or Intricate Style came in about
the year 50 a.d., and represents, with its involved and fantastic