“As in Jamaica the rivers do not amount to a great deal, for the water flows directly from the mountains into the sea. There is one, called the Cauto, which empties on the south coast, just north of Manzanillo. This can be navigated by small craft for a distance of sixty miles. But there are a number of bays which make good harbors. The one at Santiago de Cuba is particularly fine.” “Where the great fight came off, and where Hobson sunk the _Merrimac_!” cried Sam. “We must see that by all means. I once saw the _Merrimac_, but she was only a coal boat at that time.” “The _Monitor_ sunk the _Merrimac_,” came from Hockley, who was half asleep in his seat. And then as the other boys began to laugh he straightened up. “What are you laughing at anyway?” he growled. “I know I’m right.” “We are talking about the Spanish-American War, not the Civil War,” explained the professor. “Oh!” “There are only two great industries in Cuba,” went on Professor Strong. “But some day there will be a third. The two are tobacco and sugar. They dominate trade and have made many Spaniards and Cubans rich. The town we are now bound for, Pinar del Rio, is the center of trade of the Vuelta Abajo tobacco district. The folks for miles around do nothing but raise tobacco.” “And what will that third industry be?” asked Darry. “The development of the mineral resources of the island. There are large quantities of minerals in the mountains, and sooner or later companies will be organized to dig them out. The very name of the mountain, Sierra del Cobra, means Copper Mountains.” “I’d like to explore those mountains,” said Mark. “It would be lots of fun to peep down into an extinct volcano or two.” “We can do that when we get to other places, Mark. South America is full of old volcanoes.” “That’s the talk!” cried Frank, enthusiastically. “We’ll become volcano explorers. It will be fine. Who knows but that we may find a fortune in gold.” The ride to Pinar del Rio soon came to an end. The boys were somewhat disappointed in the town, which boasts of about nine thousand inhabitants. There are but few public buildings of note and everything looked rather hot and dusty. But the tobacco warehouses were something new to them, and the professor had a Cuban who could speak English take them around. “Tobacco is grown in various ways in different countries,” said the professor, as they walked around. “But the usual method, and the easiest, is to plant the seed in a specially prepared garden, or hot-house frame. As soon as it is up a few inches the plants are taken to the field and each is set out on its own little hill. Plants, to be good, require constant care, especially against the insects, that would otherwise eat holes in the leaves and render them of small value.