214
JAINA ARCHITECTURE.
Book tl.
instead of one. By this means, the size of the central stone remaining
the same, the side of the square space so roofed is increased in the ratio
of ten to seven, the actual area being doubled. The next step in the
process (Woodcut No. 113) is by employing three tiers and nine stones
113. Diagrams of Roofing. 114.
instead of two tiers and five stones, which quadruples the area roofed.
Thus, if the central stone is 4 ft., by the second process the space
roofed will be about 5 ft. 8 in. ; by the third 8 ft. square; by a fourth
process (Woodcut No. 114)—with four tiers and thirteen stones—the
extent roofed may be 9 ft. or 10 ft., always;assuming the central stone to
remain 4 ft. square. All these forms are still currently used in India,
but with four pillars the process is seldom carried further than this;
with another tier, however, and eight
pillars (as shown in Woodcut No. 115),
it may be carried a step further—exactly
the extent to which it is carried in the
tomb at Mylassa above referred to. In
this, however, as in all instances of octa-
gonal domes in this style, instead of the
octagonal form being left as such, there
are always four external pillars at the
angles, so that the square shape is re-
tained, with twelve pillars, of which the
eight internal pillars may be taken as
\ mere insertions to support the long archi-
trave between the four angular pillars.
It is evident that here again we
come to a limit beyond which we can-
not progress without using large and long stones. This was some-
times met by cutting off the angles of the octagon, and making the
lower course of sixteen sides. When this has been done an awkward-
ness arises in getting back to the square form. This was escaped
115. Diagram of Rootin;
JAINA ARCHITECTURE.
Book tl.
instead of one. By this means, the size of the central stone remaining
the same, the side of the square space so roofed is increased in the ratio
of ten to seven, the actual area being doubled. The next step in the
process (Woodcut No. 113) is by employing three tiers and nine stones
113. Diagrams of Roofing. 114.
instead of two tiers and five stones, which quadruples the area roofed.
Thus, if the central stone is 4 ft., by the second process the space
roofed will be about 5 ft. 8 in. ; by the third 8 ft. square; by a fourth
process (Woodcut No. 114)—with four tiers and thirteen stones—the
extent roofed may be 9 ft. or 10 ft., always;assuming the central stone to
remain 4 ft. square. All these forms are still currently used in India,
but with four pillars the process is seldom carried further than this;
with another tier, however, and eight
pillars (as shown in Woodcut No. 115),
it may be carried a step further—exactly
the extent to which it is carried in the
tomb at Mylassa above referred to. In
this, however, as in all instances of octa-
gonal domes in this style, instead of the
octagonal form being left as such, there
are always four external pillars at the
angles, so that the square shape is re-
tained, with twelve pillars, of which the
eight internal pillars may be taken as
\ mere insertions to support the long archi-
trave between the four angular pillars.
It is evident that here again we
come to a limit beyond which we can-
not progress without using large and long stones. This was some-
times met by cutting off the angles of the octagon, and making the
lower course of sixteen sides. When this has been done an awkward-
ness arises in getting back to the square form. This was escaped
115. Diagram of Rootin;