Nothing further was done till the explorations commenced, as before mentioned, by Mr. Newton, in 1855, and the establishment of the expedition there in the following year; though, from various causes, it was not till the 1st of January, 1857, that they were really able to commence excavations on the site of the Mausoleum. The principal discoveries which rewarded their exertions were:— _First._—Some thirty or forty blocks which formed part of the steps of the pyramid mentioned by Pliny. These all (with two exceptions) showed, by the weather marks on their upper surface, that they had been constructed of two breadths only—the tread, or upper exposed part of the steps, being always either 1 ft. 5 in. or 1 ft. 9 in. English, according to Messrs. Smith, Pullan, or Newton. The real dimension, however, as we shall see presently, was probably in inches and decimals of an inch 17·01 and 21·2526. Even more important than these were four or five angle-stones of the pyramid, showing the same dimensions in juxtaposition on their two faces. It is much to be regretted that the exact number of these stones which were found was not noted. If there had been three, and they had all been found together, which seems to have been the case, they might,—probably would,—all have belonged to one course. With four this is less probable, but it still leaves it open to any one who has a theory such as that of Mr. Cockerell or Mr. Falkener, or who might suggest a curvilinear one (as I once did), to assert that this was so, and thus leave the whole question still in doubt. If there were five this would be impossible, and it would simplify the argument to a considerable extent. The truth of the matter seems to be that Lieutenant Smith’s business there was to take charge of the Sappers and Miners under his command; Mr. Newton was only anxious to procure specimens of sculpture for the National Museum; and before Mr. Pullan arrived, a great deal that had been discovered was covered up again and no record left. Many points that might then have been easily cleared up must now, therefore, be left in doubt, unless some one will take the trouble of doing over again what has been so carelessly done once. _Secondly._—Almost equally important with these were some portions of the cymatium of the order. Like the greater steps, this was composed of pieces, 21 inches in length, and on each alternate one, covering the joint, was a lion’s head—thus 3 ft. 6 in. apart from centre to centre. From this we get, with almost absolute certainty, the width of the intercolumniations as twice, thrice, or four times 3 ft. 6 in.