CHAPTER II. 
OF THE FIVE SPECIES OF TEMPLES. 
THERE are five species of temples, whose names are, pyc¬ 
NOSTYLos, that is, thick set with columns: SYSTYLoS, 
in which the columns are not so close : DIASTYLOS, whère 
they are still wider apart : ARAEOSTYLOS, when placed 
more distant from each other than in fact they ought to 
be : EUSTYLos, when the intercolumniation, or space be¬ 
tween the columns, is of the best proportion. PYCNOSTY¬ 
Los, is that arrangement wherein the columns are only 
once and a half their thickness apart, as in the tem¬ 
ple of the god Julius, in that of Venus in the forum of 
Cæsar, and in other similar buildings. SYsTYLos, is the 
distribution of columns with an intercolumniation of two 
diameters: the distance between their plinths is then 
equal to their front faces. Examplés of it are to be seen 
in the temple of Fortuna Equestris, near the stone theatre, 
and in other places. This, no less than the former 
arrangement, is faulty ; because matrons, ascending the 
steps to supplicate the deity, cannot pass the intercolum¬ 
niations arm in arm, but are obliged to enter after each 
other ; the doors are also hidden, by the closeness of 
the columns, and the statues are too much in shadow. 
The passages moreover round the temple are inconvenient 
for walking. DIASTYLos has intercolumniations of three 
diameters, as in the temple of Apollo and Diana. The 
inconvenience of this species is, that the epistylia or 
architraves over the columns frequently fail, from their 
bearings being too long. In the ARÉOSTYLOs the archi¬