When galleys went out of fashion, and "round ships" took their place, it may be supposed that the captivity of Christian slaves diminished. In reality, however, the number of slaves employed on the galleys was small compared with those who worked on shore. If the Spanish historian be correct in his statement that at the close of the sixteenth century the Algerines possessed but thirty-six galleys and galleots, (the brigantines were not rowed by slaves,) with a total of twelve hundred oars, even allowing three men to an oar, which is excessive for some of the Corsairs' light galleots, the number of slaves is but three thousand six hundred. But in 1634 Father Dan found twenty-five thousand Christian slaves in the city of Algiers and roundabout, without counting eight thousand renegades, and so far was the fleet from being diminished (except that there were few galleys) that the priest reckoned no less than seventy sailing cruisers, from large thirty-five and forty-gun ships, to ordinary galleons and polaccas; and on August 7th he himself saw twenty-eight of the best of them sail away in quest of Norman and English ships, which usually came to Spain at that season to take in wine, oil, and spices. He adds that Tunis had then but fourteen polaccas; Salē thirty very swift caravels, drawing little water on account of the harbour bar; and Tripoli but seven or eight, owing to the vigilance of the Knights of Malta. Altogether, the whole Barbary fleet numbered one hundred and twenty sailing ships, besides about twenty-five galleys and brigantines. [Illustration: TORMENTS OF THE SLAVES. (_Dan, Hist. de Barbarie, 1637._)] [Illustration: TORMENTS OF THE SLAVES. (_Dan, Hist. de Barbarie, 1637._)]