10 cubits seem together to have determined either
the length of the radius or diameter, or halves of
these, of all the circular curves on which many of
the walls are built. For instance, the radius of the
curve behind .the great tower is 169-J- feet, and this
is equal to the diameter of the' great tower multiplied
by the square of the ratio of circumference to
diameter; or 17T7 x 3;142 = 169-34. The well-
built partly circular enclosure to the north-west of
the tower has a diameter of 54 feet, and this is equal
to 17-1.7 x 3T4. The curve of the outer wall, from
the eastern end o f the sacred enclosure (at k ) to A
is circular, and has. its centre at the altar, and its
radius is 107f feet. This is equal to twice 17T7 x
8T4. This length of 107|- feet is also the exact
distance between the middle points of the two doorways
at either end of the sacred enclosure. The
curve of the outer wall from a to the great doorway
seems to have a similar radius to the arc behind the
tower, namely, 169^ feet, but in our measurements
there we hardly fixed a sufficient number of points
in the line of the wall to make quite certain of this.
The inner long wall is parallel to the outer one until
it reaches the sacred enclosure, so it may be considered
as combined with the outer wall for our
present purpose. Besides these there are no well-
built curved walls in the great temple, except the
piece of wall near the monoliths at 'M, and it is too
short to allow of the centre of its curve being laid
down with certainty of accuracy. It does not, however,
seem to belie this system of measurement.
K