Together with the true names of the Assyrian kings, the mounds of Mesopotamia have yielded up a mass of documents in the Assyrian language, from which it is possible that we may one day acquire as full a knowledge of its structure and vocabulary as we possess at present of Greek or Latin. These documents have confirmed the previous belief that the tongue is Semitic. They consist, in the first place, of long inscriptions upon the slabs of stone with which the walls of palaces were panelled, sometimes occupying the stone to the exclusion of any sculpture, sometimes carried across the dress of figures, always carefully cut, and generally in good preservation. Next in importance to these memorials are the hollow cylinders, or, more strictly speaking, hexagonal or octagonal prisms, made in extremely fine and thin terra cotta, which the Assyrian kings used to deposit at the corners of temples, inscribed with an account of their chief acts and with numerous religious invocations. [PLATE XXXIX., Fig. 1.] These cylinders vary from a foot and a half to three feet in height, and are covered closely with a small writing, which it often requires a good magnifying glass to decipher. A cylinder of Tiglath-Pileser I. (about B.C. 1180) contains thirty lines in a space of six inches, or five lines to an inch, which is nearly as close as the type of the present volume. This degree of closeness is exceeded on a cylinder of Asshur-bani-pal’s (about B.C. 660), where the lines are six to the inch, or as near together as the type of the _Edinburgh Review_. If the complexity of the Assyrian characters be taken into account, and if it be remembered that the whole inscription was in every ease impressed by the hand, this minuteness must be allowed to be very surprising. It is not favorable to legibility; and the patience of cuneiform scholars has been severely tried by a mode of writing which sacrifices everything to the desire of crowding the greatest possible quantity of words into the smallest possible space. In one respect, however, facility of reading is consulted, for the inscriptions on the cylinders are not carried on in continuous lines round all the sides, but are written in columns, each column occupying a side. The lines are thus tolerably short; and the whole of a sentence is brought before the eye at once. [Illustration: PLATE 39]