§132. The very insurrections of the slaves, unsuccessful as they always were, also testify to their overwhelming numbers. Of the two in Sicily, the first lasted from 134 to 132 B.C., and the second from 102 to 98; the last in spite of the fact that at the close of the first the consul Rupilius had crucified 20,000, whom he had taken alive, as a warning to others to submit in silence to their servitude. Spartacus defied the armies of Rome for two years, and in the decisive battle with Crassus (71 B.C.) left 60,000 dead upon the field. Cicero's orations against Catiline show clearly that it was the calling out of the hordes of slaves by the conspirators that was most dreaded in the city. §133. Of the number under the Empire we may get some idea from more direct testimony. Horace tells us that ten slaves were as few as a gentleman in even moderate circumstances could afford to own. He himself had two in town and eight on his little Sabine farm, and he was a poor man and his father had been a slave. Tacitus tells us of a city prefect who had four hundred slaves in his mansion. Pliny says that one Caius Caecilius Claudius Isodorus left at his death over four thousand slaves. Athenaeus (170-230 A.D.) gives us to understand that individuals owned as many as ten thousand and twenty thousand. The fact that house slaves were commonly divided into "groups of ten" (_decuriae_) points in the same direction. §134. Sources of Supply.--Under the Republic the largest number of slaves brought to Rome and offered there for sale were captives taken in war, and an idea of the magnitude of this source of supply has already been given (§131). The captives were sold as soon as possible after they were taken, in order that the general might be relieved of the trouble and risk of feeding and guarding such large numbers of men in a hostile country. The sale was conducted by a quaestor, and the purchasers were the wholesale slave dealers that always followed an army along with other traders and peddlers. The spear (_hasta_), which was always the sign of a sale conducted under public authority, was set up in the ground to mark the place, and the captives had garlands on their heads as did the victims offered in sacrifice. Hence the expression _sub hastā_ and _sub corōnā vēnīre_ came to have practically the same meaning. §135. The wholesale dealers (_mangōnēs_) assembled their purchases in convenient depots, and when sufficient numbers had been collected marched them to Rome, in chains and under guard, to be sold to local dealers or to private individuals. The slaves obtained in this way were usually men and likely to be physically sound and strong for the simple reason that they had been soldiers. On the other hand they were likely to prove intractable and ungovernable, and many preferred even suicide to servitude. It sometimes happened, of course, that the inhabitants of towns and whole districts were sold into slavery without distinction of age or sex.