§350. These schools had also to serve as barracks for the gladiators between engagements, that is, practically as houses of detention. It was from the school of Lentulus at Capua that Spartacus had escaped, and the Romans needed no second lesson of the sort. The general arrangement of these barracks may be understood from the ruins of one uncovered at Pompeii, though in this case the buildings had been originally planned for another purpose, and the rearrangement may not be ideal in all respects. A central court, or exercise ground (Figs. 155, 156) is surrounded by a wide colonnade, and this in turn by rows of buildings two stories in height, the general arrangement being not unlike that of the peristyle of a house (§202). The dimensions of the court are nearly 120 by 150 feet. The buildings are cut up into rooms, nearly all small (about twelve feet square), disconnected and opening upon the court, those in the first story being reached from the colonnade, those in the second from a gallery to which ran several stairways. These small rooms are supposed to be the sleeping-rooms of the gladiators, each accommodating two persons. There are seventy-one of them (marked _7_ on the plan), affording room for 142 men. The uses of the larger rooms are purely conjectural. The entrance is supposed to have been at _3_, with a room, _15_, for the watchman or sentinel. At _9_ was an _exedra_, where the gladiators may have waited in full panoply for their turns in the exercise ground, _1_. The guard-room, _8_, is identified by the remains of stocks, in which the refractory were fastened for punishment or safe-keeping. They permitted the culprits to lie on their backs or sit in a very uncomfortable position. At _6_ was the armory or property room, if we may judge from articles found in it. Near it in the corner was a staircase leading to the gallery before the rooms of the second story. The large room, _16_, was the mess-room, with the kitchen, _12_, opening into it. The stairway, _13_, gives access to the rooms above kitchen and mess-room, possibly the apartments of the trainers and their helpers.