For the Coliseum had not been built for such harmless spectacles as those first described. The fierce Romans wanted to be excited and feel themselves strongly stirred; and, presently, the doors of the pits and dens round the arena were thrown open, and absolutely savage beasts were let loose upon one another--rhinoceroses and tigers, bulls and lions, leopards and wild boars--while the people watched with savage curiosity to see the various kinds of attack and defense; or, if the animals were cowed or sullen, their rage would be worked up--red would be shown to the bulls, white to boars, red-hot goads would be driven into some, whips would be lashed at others, till the work of slaughter was fairly commenced, and gazed on with greedy eyes and ears delighted, instead of horror-struck, by the roars and howls of the noble creatures whose courage was thus misused. Sometimes indeed, when some especially strong or ferocious animal had slain a whole heap of victims, the cries of the people would decree that it should be turned loose in its native forest, and, amid shouts of 'A triumph! a triumph!' the beast would prowl round the arena, upon the carcasses of the slain victims. Almost incredible numbers of animals were imported for these cruel sports, and the governors of distant provinces made it a duty to collect troops of lions, elephants, ostriches, leopards--the fiercer or the newer the creature the better--to be thus tortured to frenzy, to make sport in the amphitheatre. However, there was daintiness joined with cruelty: the Romans did not like the smell of blood, though they enjoyed the sight of it, and all the solid stonework was pierced with tubes, through which was conducted the stream of spices and saffron, boiled in wine, that the perfume might overpower the scent of slaughter below.