Doors and Windows. ^59 proportions of the openings to the towers themselves do not greatly differ. Our Fig. 149, which was composed by the help of those representations, is meant to give an idea of the general composition of which the door with its carved jambs and architrave, and the tower with its masts and banners, are the elements. The two types only differ from one another in the relative dimensions of their important parts, and the transition between them may have been almost imperceptible. It would seem that in the Ptolemaic epoch the wide and lofty doors were the chief objects of admiration, while under the Pharaohs, the towers through which they were pierced w^ere thought of more importance. If we examine the doorways of the temples themselves we shall there also find great variety in the manner in which they are combined architecturally with the walls in which they occur. In the Temple of Khons the jambs of the door are one, architecturally, with the wall. The courses are continuous. The Fig. 148.— a propylon. Fig. 149. — Gateway in the inclosing wall of a Temple. Re.-tored by Ch. Chipiez, lintel alone, being monolithic, has a certain independence (Fig. 150). In the Temple of Gournah, on the other hand, the doorway forms a separate and self-contained composition. The jambs are monoliths as well as the lintel, and the latter, notwithstanding the great additional weight which it has to carry, does not excede the