Other weapons of the Babylonians, which we may be sure they used in war, though the monuments do not furnish any proof of the fact, were the spear and the bill or axe. These weapons are exhibited in combination upon one of the most curious of the cylinders, where a lion is disturbed in his meal off an ox by two rustics, one of whom attacks him in front with a spear, while the other seizes his tail and assails him in the rear with an axe. [PI. XXIII., Fig. 5.] With the axe here represented may be compared another, which is found on a clay tablet brought from Sinkara, and supposed to belong to the early Chaldaean period.30 The Sinkara axe has a simple square blade: the axe upon the cylinder has a blade with long curved sides and a curved edge; while, to balance the weight of the blade, it has on the lower side three sharp spikes. The difference between the two implements marks the advance of mechanical art in the country between the time of the first and that of the fourth monarchy. [PLATE XXIII., Fig. 4.] Babylonian armies seem to have been composed, like Assyrian, of three elements--infantry, cavalry, and chariots. Of the chariots we appear to have one or two representations upon the cylinders, but they are too rudely carved to be of much value. It is not likely that the chariots differed much either in shape or equipment from the Assyrian, unless they were, like those of Susiana, ordinarily drawn by mules. A peculiar car, four-wheeled, and drawn by four horses, with an elevated platform in front and a seat behind for the driver, which the cylinders occasionally exhibit, is probably not a war-chariot, but a sacred vehicle, like the tensa or thensa of the Romans. [PLATE XXIV., Fig. 2.] [Illustration: PLATE XXIV.]