This tomb, when complete, included (1) a built up part which, being raised well above the surface of the soil, was a conspicuous object in the landscape; and (2) a subterranean part cut in the living rock which was never more than a few feet below the surface of the sand. The constructed part inclosed a chamber which was sometimes internal and sometimes external, a chamber in which the relations of the deceased deposited the funeral offerings, and in which the priests officiated before the stele, to which the most conspicuous place was always given. Sometimes this chamber is nothing more than a recess in the _façade_, a mere frame for the stele. The structure also contains a retreat in its thickness where the statues of the deceased were walled up. The subterranean part is composed of the well and the mummy chamber. The well is sunk from different parts of the building; usually traversing its whole depth; it leads to the mummy chamber which is found at varying depths in the bowels of the earth. Such are the constituent elements of the _mastaba_, that is to say, of those private tombs which were contemporary with the Pyramids. All over Egypt, in every one of the cemeteries, no matter where they are situated or what their date, the same elements are to be found, modified in certain particulars by the rank of the deceased, by the nature of the soil, by the size of the tomb, and by the changes of fashion, but always to be easily recognized. Of all these elements there is but one which does not persistently reappear in monuments other than the mastaba, and that is the _serdab_. This retreat for statues has not, as yet, been found in any of the royal tombs of the first six dynasties, neither has it been met with in the tombs of the two Theban empires, or of later epochs. And yet it was connected with one of the most vital hopes of the Egyptian religion. It fulfilled in the happiest manner, one of the conditions imposed upon the Egyptian architect by the strange conceptions of a future life which we have described. Why then do we, as a rule, find the serdab only in the mastabas of the Memphite necropolis? Its absence under the Theban princes is, perhaps to be explained by the progress made in the science of embalming. The heads of more than one mummy have now been exhibited in the cases of European museums for many years, and, in spite of the dampness of our climates, they still preserve their skin, their teeth and their hair (Fig. 126). When they had learnt the secret of preserving the body from corruption, so that after a long series of centuries it should be pretty much in the same condition as on the day after death, they did not indeed, cease to make those images which were supposed to guard the _double_ from annihilation, but they attached less importance to their safety, and took less trouble to hide them. They considered that they had done enough for their preservation by putting them in the precincts of their tombs and