we have got is the larger one, and that consequently this difference does exist, the solution will probably be found in the fact of the existence of two roof stones, with the abnormal dimensions quoted by Mr. Pullan as 10-1/2 inches and 9 respectively. It may be they were 9´´ and 10´´·2, which would give the quantity wanted. But, whatever their exact dimensions, it is probable that they were the lowest steps of the pyramid; and, if the discrepancy above alluded to did exist, they may have been used as the means of adjusting it. Be all this as it may, I feel convinced that whenever the fragments can be carefully re-examined, it will be found that the exact dimension we are seeking was 80 Greek feet.[14] There is another test to which this arrangement of the columns must be submitted before it can be accepted, which is, the manner in which it can be made to accord with the width of the cella. The first hypothesis that one naturally adopts is that the peristyle should be one intercolumniation in width, in other words that the distance between the centres of the columns and the walls of the cella should be 10 feet 6 inches. Assuming this, or deducting 21 Greek feet from the extreme width we have just found above of 73 feet 6 inches, it leaves 52 feet 6 inches for the width, which is a very reasonable explanation of Pliny’s expression, “brevius a frontibus.” It is also satisfactory, as it is in the proportion of 5 to 6, with 63 feet, which is Pliny’s dimension, for the length of the cella. But the “instantia crucis” must be that it should turn out—like the longer sides—just one half the lower step, or rock-cut excavation. What this is, is not so easily ascertained. In his letter to Lord Stratford de Redcliffe, of 3rd April, 1857, Mr. Newton calls it 110 feet; in the text (p. 95) it is called 108; while Lieut. Smith, who probably made the measurement, calls it 107 (Parl. Papers, p. 20). The latter, therefore, we may assume is the most correct. If the above hypothesis is correct, it ought to have been 106·31 English or 105 Greek feet, which most probably was really the dimension found; but as it did not appear to the excavators that anything depended upon it, they measured it, as before, carelessly and recorded it more so. In the meanwhile, therefore, we may assume that the width of the cella was 52 feet 6 inches, or 30 Babylonian cubits. The width of the lower step on the east and west fronts was 105 Greek feet, or 60 cubits exactly. Of course this is exactly in the proportion of 5 to 6 with the longer step, which, as we found above, was 72 cubits or 126 Greek feet; and this, as we shall presently see, was the exact height of the building without the quadriga, the total height being 80 cubits or 140 Greek feet. _Pyramid._ Having now obtained a reasonable proportion for the lower step of the Pyramid, 100 by 80 Greek feet, the remaining dimensions are easily ascertained.