The enclosure walls, partitions, and secondary facades were upright; and they raised the materials by means of a rude kind of crane planted on the top.

The pylon walls and the principal facades (and sometimes even the secondary facades) were sloped at an angle which varied according to the taste of the architect.

In order to build these, they formed inclined planes, the slopes of which were lengthened as the structure rose in height.

These two methods were equally perilous; for, however carefully the blocks might be protected while being raised, they were constantly in danger of losing their edges or corners, or of being fractured before they reached the top (Note 7).

Thus it was almost always necessary to re-work them; and the object being to sacrifice as little as possible of the stone, the workmen often left them of most abnormal shapes (fig.