The conquest of Tortuga was not the only measure necessary for the effectual suppression of the buccaneers. Five or six swift cruisers were also required to pursue and bring to bay those corsairs who refused to come in with their commissions.[221] Since the Restoration the West Indies had been entirely denuded of English men-of-war; while the buccaneers, with the tacit consent or encouragement of Doyley, had at the same time increased both in numbers and boldness. Letters written from Jamaica in 1664 placed the number scattered abroad in privateering at from 1500 to 2000, sailing in fourteen or fifteen ships.[222] They were desperate men, accustomed to living at sea, with no trade but burning and plundering, and unlikely to take orders from any but stronger and faster frigates. Nor was this condition of affairs surprising when we consider that, in the seventeenth century, there flowed from Europe to the West Indies adventurers from every class of society; men doubtless often endowed with strong personalities, enterprising and intrepid; but often, too, of mediocre intelligence or little education, and usually without either money or scruples. They included many who had revolted from the narrow social laws of European countries, and were disinclined to live peaceably within the bounds of any organized society. Many, too, had belonged to rebellious political factions at home, men of the better classes who were banished or who emigrated in order to keep their heads upon their shoulders. In France the total exhaustion of public and private fortune at the end of the religious wars disposed many to seek to recoup themselves out of the immense colonial riches of the Spaniards; while the disorders of the Rebellion and the Commonwealth in England caused successive emigrations of Puritans and Loyalists to the newer England beyond the seas. At the close of the Thirty Years' War, too, a host of French and English adventurers, who had fattened upon Germany and her misfortunes, were left without a livelihood, and doubtless many resorted to emigration as the sole means of continuing their life of freedom and even of licence. Coming to the West Indies these men, so various in origin and character, hoped soon to acquire there the riches which they lost or coveted at home; and their expectations deceived, they often broke in a formal and absolute manner the bonds which attached them to their fellow humanity. Jamaica especially suffered in this respect, for it had been colonized in the first instance by a discontented, refractory soldiery, and it was being recruited largely by transported criminals and vagabonds. In contrast with the policy of Spain, who placed the most careful restrictions upon the class of emigrants sent to her American possessions, England from the very beginning used her colonies, and especially the West Indian islands, as a dumping-ground for her refuse population. Within a short time a regular trade sprang up for furnishing