These tombs are distinguished by great variety, but, before noticing the principal types to which they may be referred, the points which distinguish them from the royal burying-places should be indicated. The private sepulchre is never subdivided like those of the kings. This subdivision is to be explained by the exceptional position of the sovereign mid-way between his subjects and the national deities. A funerary chapel cut in the sides of the mountain would obviously be too small for the purposes to which the commemorative part of the tomb of a Rameses or a Seti would be put. On the other hand, no private individual could hope to receive royal honours nor to associate his memory with the worship of the great Egyptian gods. We find that for him the chapel always remains closely connected with the mummy chamber. Sometimes it is in front of it, sometimes above it, but in neither case does it ever fail to form an integral part of the tomb, so that the latter preserves at once its traditional divisions and its indissoluble unity. We may say the same of the well, which plays the same part in the private tombs of the New Empire as in the Mastaba and the _Speos_ of the Ancient and Middle Empires. In almost every instance the mummy chamber is reached by a well, whether the tomb be constructed in the plain or in the side of the mountains. It is seldom so deep as those of Gizeh or Sakkarah; its depth hardly exceeds from 20 to 30 feet; but its arrangement is similar to those in the early necropolis. The mummy chamber opens directly upon it. Sometimes there are two chambers facing each other at the foot of the well, and of unequal heights.[263] After the introduction of the corpse, which was facilitated by notches cut in two faces of the well, the door of the mummy chamber was built up--the well filled in. In a few exceptional instances, the tombs of private individuals seem to have had no well, and the innermost chamber, as in the case of royal tombs, received the mummy.[264] In such cases it is very necessary to make sure that explorers have not been deceived by appearances. In these dusty interiors the carefully sealed opening might easily escape any but the most careful research; and as for a sarcophagus, when one is found in such a chamber, it may have been placed there long after the making of the tomb. Such usurpations are by no means unknown.[265] In the time of the Ptolemies, influential people, such as priests and military functionaries, made them without scruple. The venerable mummies, dating from the time of Rameses, were thrown into a corner; their cases were made use of, sometimes for the mummy of the usurper, sometimes for more ignoble purposes. In more than one of these usurpations the new comer has been placed in a chamber constructed for some other object.