"I know what that means," exclaims Manuel, "an armadillo is hiding from us. He heard us coming and at once burrowed under ground. I don't see how they can dig so fast. Do you? Now let's make our donkeys rest, and see if he will come out when all is quiet." The children get off and tie their donkeys to some trees, while they themselves sit down at quite a little distance from the hole. It is not long before Mr. Armadillo appears, reaching his head out from his shell as he climbs. He does not come very far, however, before Ponce spies him. The dog begins to bark furiously, and tries to get away from Manuel, who holds him by his collar. The armadillo flees back into his hole "as quick as a flash," as the saying is, and does not make his appearance again, although the children wait quite a while longer. What a curious looking animal it is, with its shell of horny plates, and a white horn on its back through which it blows and makes a loud noise! When in danger, it draws itself completely within its shell. The flesh is a great dainty, but the little animal is hard to catch. The negroes on some of the West Indian islands belonging to England call the armadillo "hog-in-armour." Not a bad name, is it? Manuel and Dolores, still mounted on their patient little donkeys, leave the woods, and come out upon a path leading through their father's coffee plantation. CHAPTER V. THE COFFEE-TREE. WHEN the first white people came to Porto Rico they did not find any coffee among the other tropical fruits. To-day it is the most valuable product of the island, yet all the trees growing now came from a few plants brought here nearly two hundred years ago. Perhaps you would like to hear the story. In the year 1714, all the coffee used in the civilised world was under the control of the Dutch. They were very jealous of other people growing it, but one of the governors of Amsterdam gave a single plant to the King of France. From this plant a few others were raised and sent across the ocean to Martinique, an island of the West Indies belonging to France. The voyage was long. The fresh water on board the ship nearly gave out, but the man who had the plants in his care shared his allowance with them. They were thus kept alive, and from them have come the coffee-trees that cover thousands of acres of land to-day in Porto Rico, Martinique, and the other islands. Manuel and Dolores delight in riding through the plantation at this season of the year; the rows of small, evenly trimmed trees, with their glossy green leaves, are always a pretty sight. But just now they are more beautiful than at other times, for each tree is a mass of snow-white blossoms, filling the air with their fragrance.