The Cuban bloodhound, of which we hear so much, is not a native of the island, but belongs to an imported breed, resembling the English mastiff, though with larger head and limbs. He is by nature a fierce, bloodthirsty animal, but the particular qualities which fit him for tracing the runaway slaves are almost entirely acquired by careful training. This is accomplished by experts in the business, who are sometimes Monteros, and sometimes French overseers of plantations who are out of work or regular engagement. Each estate keeps some of these dogs as a precautionary measure, but they are seldom called into use of late, for so certain is the slave that he will be instantly followed as soon as missed, and inevitably traced by the hounds, that he rarely attempts to escape from his master unless under some peculiarly aggravating cause. It may even be doubted whether a slave would be pursued to-day were he to attempt to escape, because slavery is so very near its last gasp. In one respect this is an advantage to the negroes, since the master, feeling this indifference, grants the blacks more freedom of action. So perfect of scent is the Cuban bloodhound that the master has only to obtain a bit of clothing left behind by the runaway and give it to the hound to smell. The dog will then follow the slave through a whole population of his class, and with his nose to the ground lead straight to his hiding-place. For three centuries Cuba has been the hotbed of African slavery. Few, if any, have been imported during the last thirty years, that is to say since 1855, during which year some cargoes were successfully run. In 1816, the Spanish government, in a solemn treaty, declared its conviction of the injustice of the slave trade. On the 23d of September, 1817, in consideration of four hundred thousand pounds sterling paid as an equivalent by Great Britain, Spain ratified a treaty proclaiming that the slave trade should cease throughout all the dominions of that country on the 30th day of May, 1820, and that it should not afterwards be lawful for any Spanish subject to purchase slaves. It was further declared by the home government that all blacks brought from Africa subsequent to that date should be at once set free, and the vessel on which they were transported should be confiscated, while the captain, crew, and others concerned should be punished with ten years' penal servitude. Yet, as all the world knows, this was nothing more than a dead letter so far as Cuba was concerned, and so late as 1845, statistics show an arrival of imported slaves from Africa of fifteen thousand negroes annually, for the previous twenty years. Tacon, Governor-General from June, 1834, until April, 1838, like his predecessors and successors made no secret of receiving seventeen dollars per head,--that is one doubloon,--on every slave landed. Other officials spent their fees on themselves or hoarded them for a fortune to be enjoyed on returning home to Spain, but Tacon