Both tablets have peculiar knobs at the sides, the purpose of which is evidently not to facilitate holding the tablet in one's hand while writing or reading it, as Langdon assumed [26] (it would be quite impracticable for this purpose), but simply to protect the tablet in its position on a shelf, where it would naturally be placed on the edge, just as we arrange books on a shelf. Finally be it noted that these two tablets of the old Babylonian version do not belong to the same edition as the Meissner tablet above described, for the latter consists of two columns each on obverse and reverse, as against three columns each in the case of our two tablets. We thus have the interesting proof that as early as 2000 B.C. there were already several editions of the Epic. As to the provenance of our two tablets, there are no definite data, but it is likely that they were found by natives in the mounds at Warka, from which about the year 1913, many tablets came into the hands of dealers. It is likely that where two tablets of a series were found, others of the series were also dug up, and we may expect to find some further portions of this old Babylonian version turning up in the hands of other dealers or in museums. IV. Coming to the contents of the two tablets, the Pennsylvania tablet deals with the meeting of the two heroes, Gilgamesh and Enkidu, their conflict, followed by their reconciliation, while the Yale tablet in continuation takes up the preparations for the encounter of the two heroes with the guardian of the cedar forest, Humbaba--but probably pronounced Hubaba [27]--or, as the name appears in the old Babylonian version, Huwawa. The two tablets correspond, therefore, to portions of Tablets I to V of the Assyrian version; [28] but, as will be shown in detail further on, the number of _completely_ parallel passages is not large, and the Assyrian version shows an independence of the old Babylonian version that is larger than we had reason to expect. In general, it may be said that the Assyrian version is more elaborate, which points to its having received its present form at a considerably later period than the old Babylonian version. [29] On the other hand, we already find in the Babylonian version the tendency towards repetition, which is characteristic of Babylonian-Assyrian tales in general. Through the two Babylonian tablets we are enabled to fill out certain details of the two episodes with which they deal: (1) the meeting of Gilgamesh and Enkidu, and (2) the encounter with Huwawa; while their greatest value consists in the light that they throw on the gradual growth of the Epic until it reached its definite form in the text represented by the fragments in Ashurbanapal's Library. Let us now take up the detailed analysis, first of the Pennsylvania tablet and then of the Yale tablet. The Pennsylvania tablet begins with two dreams recounted by Gilgamesh to his mother, which the latter interprets as presaging the coming of Enkidu to Erech.