When the curvilinear roof is omitted, a flat one is substituted, nearly similar to those common in the country at the present day, consisting of beams of unsquared timber, laid side by side as close as they can be laid, and over this a mass of concrete or clay, sufficiently thick to prevent the rain from penetrating through. Sometimes this is surmounted by a low pediment, and sometimes the lower framing also stands out from the rock, so as to give the entrance of the tomb something of a porchlike form. Both these forms are illustrated in the two woodcuts (Nos. 119 and 120), and numerous varieties of them are shown in the works of Sir Charles Fellows and others, all containing the same elements, and betraying most distinctly the wooden origin from which they were derived. [Illustration: 121. Ionic Lycian Tomb. (From Texier’s ‘Asie Mineure.’)] The last form that these buildings took was in the substitution of an Ionic façade for these carpentry forms: this was not done apparently at once, for, though the Ionic form was evidently borrowed from the neighbouring Greek cities, it was only adopted by degrees, and even then betrayed more strongly the wooden forms from which its entablature was derived than is usually found in other or more purely Grecian examples. As soon as it had fairly gained a footing, the wooden style was abandoned, and a masonry one substituted in its stead. The whole change took place in this country probably within a century; but this is not a fair test of the time such a process usually takes, as here it was evidently done under foreign influence and with the spur given by the example of a stone-building people. We have no knowledge of how long it took in Egypt to effect the transformation. In India, where the form and construction of the older Buddhist temples resemble so singularly these examples in Lycia, the process can be traced through five or six centuries; and in Persia it took perhaps nearly as long to convert the wooden designs of the Assyrians into even the imperfect stone architecture of the Achæmenians. Even in their best and most perfect buildings, however, much remained to be done before the carpentry types were fairly got rid of and the style became entitled to rank among the masonic arts of the world.