The Carthaginians were anxious for peace, and sent ambassadors to the Roman camp to negotiate, but Regulus, in his proposal of terms, exceeded all reasonable limits. He pretended to act on the principle of give and take, but the giving was to be all on one side, and the taking all on the other. The Carthaginians returned no answer to these insolent demands; but it is probable their silence must soon have been construed into consent, had it not been for the valour of a Spartan of the name of Xanthippus. This individual was a mere mercenary, who put other people to death for his own living; but he was, at all events, a working man, and infused his own spirit of energy into the Carthaginian army. He personally superintended the training, not only of the men, but of the elephants, and taught the soldiers how to wield as a power those hitherto unwieldy animals. Taking a hundred under his immediate tuition, he brought them into such a state of docility, that when turned out for exercise, they formed a stud worthy of the zoologist's attentive study. With these sagacious brutes, and a large number of troops, he went forth against Regulus, whose army amounted to 30,000 men; but the soldiers of Xanthippus fought with the courage of lions, which, backed up as it was by the firmness of the elephants, gave them a decisive victory. More than 30,000 Romans perished, if the accounts handed down to us are to be believed, and 500 were taken prisoners, though, if the same accounts are to be believed, the Roman army was only 30,000 strong; so that the 500 captives must have been supplied from some of those exclusive sources which are open to none but the historian. 2000 more are alleged to have escaped, but we must leave the reader to solve the difficulty as he can; for as two into one will not go, so 33,500 out of 30,000 will not come by any process we are acquainted with. Xanthippus, the mercenary, had made it worth his while, for he was highly paid, and received rich presents, with which, as he dreaded the envy of the nobles, he thought he had better make himself absent as speedily as possible. He returned, therefore, to Sparta, to astonish the natives of his own city with the wealth he had acquired.