At the time when the Knights first came hither, Malta was hardly fortified at all. True, Fort St. Angelo existed in name, and it mounted a few small guns, but a score of Algerine pirates could have landed and taken possession, so far as any protection was afforded by this apology for a fort. The thin layer of soil which covered the rocks of the island here and there was hardly sufficient to till, and no extensive effort at agriculture or gardening seems to have been made by the natives before the Knights came to Malta, or at least not for centuries. In any other hands save those of this thrifty and determined semi-military organization, the island would have been but a sorry gift. It is described by a popular writer of that period as being "nothing better than a shelterless rock of soft sandstone called tufa." Subsistence for the dwellers upon the group, with the exception of fish, which were plenty enough, was brought almost entirely from Sicily, or the mainland. Frequent invasions of Saracens and Turks, continued for so many years, had devastated the islands, discouraging and impoverishing the natives, large numbers of whom had been carried away by the invaders and sold into slavery. This was the usual mode of disposing of prisoners of war in those days among people of the East. According to the authority from which we have just quoted, Malta was in 1530 "intensely dry and hot, with not a forest tree, and hardly a green thing to rest the eye upon." This barren waste, however, was destined in the course of a few years to put on a very different aspect, and to become an attractive example of fertility and fruitfulness; in fact, a dépôt of vast importance, by the exercise of energy and engineering skill. The material improvements thus introduced, together with the protection from foreign enemies which the Maltese gained, was to be considered with many qualifications. Magdalen asylums and foundling hospitals, to which priests and Knights could recommend their favorites for shelter, became most suspiciously numerous. The inference is only too plain. The native population, as usual, emulated not the virtues, but the vices of the new-comers. That the group must have flourished greatly under the Phoenicians, Greeks, Carthaginians, and Romans, there are plenty of monuments still extant to prove; but under the Arabs and Sicilians it had gradually declined, until the period when it came into possession of the Knights of St. John, who began promptly to restore its fallen fortunes, though, as has been intimated, at the expense of the morals of the people.