That the constellations of the Zodiac were from a remote age recognized by the dwellers in Mesopotamia is scarcely to be doubted. We find on the boundary stones in the British Museum _representations_ of several of their figures. The Bull, the Tortoise (in lieu of the Crab), a female figure with wings, the Scorpion, the Archer, and the Goat-fish, are all portrayed, not only on boundary stones, but also on cylinder seals and gems. Again, in the old astrological works, we find _mention_ of the Scorpion “Gir-tab,” and of the Goat-fish “Muna-xa,” and as planets are said to “approach to,” and “linger in,” the stars of Gir-tab and of Muna-xa, it may well be supposed that they were the Zodiacal constellations still represented under the forms of Scorpion and Goat-fish. Out of the many star-groups mentioned in the old tablets, only a few have as yet been certainly identified with their modern equivalents. As to the identity of others, we may guess. For instance, when it is said “Mercury[7] lingered in the constellation Gula,” we may guess that Gula represents Aquarius, which sign in the Epping and Strassmaier tablets figures as “Gu.” [7] _Infra_, p. 47, note. From all these sources of information, we gather that the twelve divisions of the ecliptic had been mapped out at the time the astrological works were drawn up, and that some (at least) of these divisions corresponded exactly to those now represented on celestial globes. The suggestion, therefore, put forward by Professor Sayce and other scholars, that the twelve Accadian months corresponded to the twelve constellations of the Zodiac, and that we may trace a resemblance in some instances between the name of the month in the old Accadian language and the constellation into which the sun at that time of the year entered, is not in itself improbable. The following months are those in which this resemblance is very striking: 1st month, Bar zig-gar (“the sacrifice of righteousness”), Aries. 2nd month, Khar-sidi (“the propitious bull”), Taurus. 3rd month (sometimes called) Kas (“the Twins”), Gemini. 6th month, Ki Gingir-na (“the errand of Istar”), Virgo. We know from the Epping and Strassmaier tablets as a matter of fact, that the months and the constellations of the Zodiac _did_ in the second century, B.C., correspond with each other in order and sequence as above suggested, and if further research should establish the fact that they so corresponded in Sargon’s time, then as we find Nisan (Bar zig-gar) throughout all these ages holding the place of “first month,” and marking “the beginning of the year,” it will necessarily follow that the Accadian, Babylonian, and Assyrian calendars dealt with a _sidereal_ and not a _tropical_ year.