Mr. Pullan, using the nearly correct measure of 17 English inches for the shorter step, obtained 32 feet 6 inches English for the spread of the pyramid in one direction. It need hardly be remarked that when there were 24 joints, and each stone sloped slightly backwards instead of having its face perpendicular to its bed, it is impossible now to attain any minute accuracy in this dimension; but 32·5 ft. English is so nearly 32 Greek feet (it ought to have been 32´·4) that we may fairly assume that that was the dimension intended, the difference being very slightly in excess of one inch. In the other direction Mr. Pullan obtained 39´ 11-1/2´´ English; but as it is impossible, for the reasons just stated, to ascertain to half an inch what this dimension really was, we may assume this to be 40 English feet; and as Mr. Pullan used the erroneous measurement of 21 English instead of 21 Greek inches, we at once obtain 40 Greek feet for the spread in the longer direction, or again in the ratio of 4 to 5. This leaves a platform on the summit of 20 Greek feet by 16, on which to erect the pedestal or meta, which is to support the quadriga. The question is,—is it sufficient? According to Mr. Pullan’s drawings (Plates XVIII. and XX.), the group measures 15 feet English in length by 13´ 6´´ across, and 12´ 6´´ from the extreme hoof on one side to that on the other. This, however, hardly accords with the facts stated in the text.[15] It is stated at page 162, that the horses measure each 3 feet 6 inches across the chest, which alone makes 14 feet, supposing them to stand with their shoulders touching each other. Between the two central horses was the pole, which may have measured 9 inches, and as it could hardly be supported otherwise, if of marble, probably touched the shoulder of the horse on either side; and, allowing the same distance between the two outer horses, we get 16´ 3´´ English, or, as near as may be, 16 Greek feet for the extreme width of the group. This, however, is probably overstating the matter; 3´ 6´´ seems an extreme measurement, in so far as I can ascertain. There is no proof that they were all so, and 6 inches is sufficient for the width between the outer horses. This dimension may therefore be stated as between 15 and 16 Greek feet. The width of the plinth would be less than either, for a horse stands considerably within his extreme breadth, and I need hardly say that anywhere, but more especially at such a height as this, a sculptor would bring the hoof as near the edge of the plinth as possible. In the Museum, there is one hoof of one of the chariot-horses placed within 2 inches of the edge of the stone on which it stands; but this does not seem to have been an outside stone; though the same dimensions would be ample if it were. There is no difficulty, therefore, in this dimension; the plinth probably may have been 15 Greek feet, which would allow 6 inches either way for the projection of the step.