THE TWO TOWERS
A B shows present top of tower, C D shows outline of walls as seen in illustration, [Chap. VI].
The walls which are lightly shaded in the accompanying plans are much inferior in construction to the more darkly shaded walls, for while the latter are built in most regular courses, and the stones are most carefully packed in the whole thickness of the walls, the former, though sometimes having the exterior courses laid with some regularity, are most [[149]]carelessly built in their interior, and the stones seem to have been laid in anyhow, and consequently there is a great difference in the durability of these walls; and while it would almost be possible to drive a cart along the top of the better-built part of the outer wall, one can only creep along the top of the worse-built portion while risking a fall. Besides, the better-built and the worse-built portions of the outer wall do not unite near the great doorway, and the foundation [[150]]of the well-built walls turns outward, as is shown in the plan. The worse-built walls of all the temples do not show any of the peculiarities of design so characteristic of the better walls, except in two instances, where they seem to be rough reconstructions of older walls. We may, therefore, assume that these poorer walls are not of the original period, and that they were built by a people who either did not practise solar worship or who did not do so under the original forms. We will, therefore, disregard the poor walls in studying the plans of the temples. It is much to be regretted that we could recover no plan of the western side of the original outer wall, as [[151]]it might have made clear to us the meaning of many of the features of the eastern wall.
COIN OF BYBLOS SHOWING THE ROUND TOWER
The most important feature in the interior of the temple is, of course, the great tower, which is a marvel of workmanship in rough material, and in the truth of its lines almost as wonderful as the column of a Greek temple. We could at first discover no reason for its being built in its peculiar position. It has not been placed with any reference to the points of the compass nor to the bearing of the sun at the equinoxes, and its position is only indirectly connected with the position of the sun at the solstices. But it is in the middle of the space marked off by the two inner doorways, and the more easterly of these two doorways is at the point where the sun would appear when rising at the summer solstice when regarded from the central altar, as will be shown farther on; and the other doorway is at the point where the decoration on the outer wall terminates, and that is at the part of the wall where the sun’s rays would be tangential to its curve when rising at the same solstice. The portion of the outer wall behind the above-mentioned sacred enclosure is built in the form of a circular arc with its two extremities at B and K, and its centre at P, and the tower stands midway between these points. Close to the great tower is the little one, and no reason for its position suggests itself; but the relative proportions of the two towers are curious, and seem to offer an explanation of the plan of some other parts of [[152]]the building—in fact, the diameter of the great tower seems to have represented the unit of measure in the construction of the curves of the outer walls and of all the regularly curved inner walls in the great temple, and in all the well-built temples in Mashonaland. The diameter of the great tower at its base is 17·17 feet or 10 cubits,[1] and this is exactly equal to the circumference of the little tower. This ratio of circumference to diameter and the above measure of 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 169⅓ feet, and this is equal to the diameter of the great tower multiplied by the square of the ratio of circumference to diameter; or 17·17 × 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 17·17 × 3·14. The curve of the outer wall, from the eastern end of the sacred enclosure (at K) to A is circular, and has its centre at the altar, and its radius is 107⅘ feet. This is equal to twice 17·17 × 3·14. This length of 107⅘ feet is also the exact distance between the middle points of the two doorways [[155]]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, 169⅓ 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.
THE TRIPLE WALLS AT ZIMBABWE
We need hardly expect to find the same measure always applying to the buildings on the hill, for the form of these buildings is often controlled by the nature of the ground. Still they do apply, and the diameter of the curve on which the wall of the eastern temple is built is 84½ feet, which is equal to half of 17·17 × 3·142. Of the two curved walls on the left hand when entering this temple from the south the diameter of the curve of one is equal to 17·17 × 3·14, and the radius of the other is 17·17 feet. The only other regularly curved wall on the hill is the western great wall with monoliths and round towers, and the diameter of the circle of which the curve of this wall forms a part is 254 feet, and this does not agree with our system of measure. [[156]]But this wall and its towers are not well built, and there is good reason to suppose that it is not the original wall, or that the outer portion of it is not original; and, in fact, we discovered the foundation of part of another parallel wall, as is partly shown in plan, six feet west of this wall. If this were the original wall, it would give a diameter of 266 feet for the circle, which is half of 17·17 × 3·143.