In his second voyage he discovered the island of Jamaica and several other islands. Ferdinand and Isabella received him with kindness upon his return; but two years passed before he could obtain another squadron. It was during this third voyage that complaints reached Isabella that Columbus was enslaving the inhabitants of Hayti. An officer named Bobadilla was sent to Hayti to investigate the matter. He was unscrupulous and envious; and, falsely using his official authority, he ordered Columbus to be sent back to Spain in chains. These outrages, inflicted upon a man so illustrious, roused indignation throughout the world. Ferdinand and Isabella were shocked and alarmed upon hearing of this outrageous treatment, and sent in the greatest haste to release him from his fetters, and to express their sympathy and regret for the indignities he had suffered. Some months after, Columbus started upon his fourth and last voyage. After encountering storms and perils, Columbus reached the continent at what is now called Central America, near Yucatan. Notwithstanding the importance of having at last touched the American continent, this voyage was a series of disappointments and disasters. He was detained for a year on the island of Jamaica, on account of the loss of his ships, which were wrecked in the storms. At length, two vessels arrived at the island, and Columbus embarked for his return to Spain. When he at last reached that country, he was broken down by old age, sickness, and mental suffering. Poverty stared him in the face. Isabella was upon her death-bed; and Ferdinand was heartless, and would not offer him any relief. After all his achievements in behalf of mankind, Columbus thus sadly writes to his son: “I live by borrowing. Little have I profited by twenty years of service, with such toils and perils, since at present I do not own a roof in Spain. If I desire to eat or sleep, I have no resort but an inn, and for the most times have not wherewithal to pay my bill.” In the midst of such sorrow and poverty, the heroic Columbus passed his last days on earth. He was buried in the Convent of St. Francisco, at Seville. Thirty years afterwards, his remains were removed to St. Domingo, on the island of Hayti. Upon the cession of the island to the French, in 1795, they were transferred by the Spanish authorities to the Cathedral of Havana, in Cuba. [Illustration: TOMB OF FERDINAND AND ISABELLA IN THE CATHEDRAL OF GRANADA.]