The earlier astronomical achievements at Babylon were not, in any real sense, astronomical at all. They were simply the compilation of lists of crude astrological omens, of the most foolish and unreasoning kind. Late in Babylonian history there were observations of a high scientific order; real observations of the positions of moon and planets, made with great system and regularity. But these were made after Greek astronomy had attained a high level, and Babylon had come under Greek rule. Whether this development of genuine astronomical observation was of native origin, or was derived from their Greek masters, is not clear. If it was native, then certainly the Babylonians were not able to use and interpret the observations which they made nearly so well as were Greek astronomers, such as Eudoxus, Thales, Pythagoras, Hipparchus and many others. But it must not be supposed that, though their astronomical achievements have been grossly, even ludicrously, exaggerated by some popular writers, the Babylonians contributed nothing of value to the progress of the science. We may infer from such a tablet as that already quoted on page 320, when the equinox was observed on the 6th day of Nisan, since there were 6 _kasbu_ of day and 6 _kasbu_ of night, that some mechanical time-measurer was in use. Indeed, the record on one tablet has been interpreted as noting that the astronomer's clock or clepsydra had stopped. If this be so, then we owe to Babylon the invention of clocks of some description, and from an astronomical point of view, this is of the greatest importance. Tradition also points to the Chaldeans as the discoverers of the _Saros_, the cycle of 18 years, 10 or 11 days, after which eclipses of the sun or moon recur. The fact that very careful watch was kept every month at the times of the new and of the full moon, at many different stations, to note whether an eclipse would take place, would naturally bring about the discovery of the period, sooner or later. The achievements of a nation will be in accordance with its temperament and opportunities, and it is evident from the records which they have left us that the Babylonians, though very superstitious, were a methodical, practical, prosaic people, and a people of that order, if they are numerous, and under strong rule, will go far and do much. The discovery of the _Saros_ was such as was within their power, and was certainly no small achievement. But it is to the Greeks, not to the Babylonians, that we trace the beginnings of mathematics and planetary theory. We look in vain amongst such Babylonian poetry as we possess for the traces of a Homer, a Pindar, a Sophocles, or even of a poet fit to enter into competition with those of the second rank in the literature of Greece; while it must remain one of the literary mysteries of our time that any one should deem the poetry of the books of Isaiah and Job dependent on Babylonian inspiration.