Slab x. was found at the north-west angle of the Parthenon in 1835. A fragment which belongs to the left-hand lower corner of the slab, and completes Nos. 24, 25, has been adjusted since the publication of the work of Michaelis. This slab was not drawn by Carrey, who indicates a lacuna at this point. It is therefore probable that the slab had already fallen from its place. The last two complete figures on this slab are looking back, as if their attention is directed to the advancing chariots. Michaelis has not observed that between these figures and the marshal (No. 31) there has been another draped figure (No. 30*), of whom nothing remains but the shoulders and a little drapery, shown immediately in front of the marshal (No. 31), and his right foot on slab x., seen next to the right foot of No. 30, the left foot of No. 30 being lost. This figure must have been the hindermost in the procession of Thallophori, and the entire number of these persons is therefore seventeen, not sixteen, as Michaelis makes it. [Rightnote: XI.] [Sidenote: 31.] With slab xi. the chariot groups begin. This part of the frieze has greatly suffered from mutilation. The remains of the chariot groups still extant show that there were at least nine of these. According to the calculation of Michaelis, that was the original number of chariots on this frieze. All these chariots are drawn by four horses, _harmata tethrippa_, or quadrigæ; the charioteer stands in the chariot, and is accompanied by the apobates, who is armed with a helmet and Argolic buckler, and is represented in the act of stepping down from the chariot or standing behind it. Each quadriga is accompanied by a marshal, _pompeus_. The vigour and animation of the chariot groups form a marked contrast with the groups that immediately precede them. The transition from the rapid motion of the chariots to the quietude of the Thallophori is skilfully effected by a chariot seen in rapid motion but in the act of being suddenly checked by the marshal (No. 31), who is represented eagerly pressing back the plunging horses of the chariot which follows on the next slab. In the haste of his movement he has nearly thrown off his mantle, holding it from slipping further with his right hand on his right thigh. The original of this slab was found at Athens probably about 1834. [Rightnote: XII.] [Sidenote: 32.] [Sidenote: 33.]