What beautiful woods these are! Cocoanut, banana, sago, and palmetto trees grow here, as well as cedar, India-rubber, guava, and many other tall and stately trees belonging to the tropics. More than five hundred different kinds of trees are found on the one island of Porto Rico, every one of them growing over fifteen feet high. Just think of it, children! Manuel can pick lemons, oranges, bananas, limes, plantains, peaches, apricots, olives, tamarinds, and--dear me! I can't tell you how many other fruits, without stepping off the land owned by his father. "Listen!" says Dolores to her brother, "don't you hear that grinding, buzzing noise? It sounds like some one grinding a knife. I wonder what it can be." The children make the donkeys stop, and look all around them. No one is to be seen. Then turning their eyes up into the branches of a tree close by, they see a strange sight. It is a beetle at least six inches long. He is very busy sawing off a small branch. "Oh, I know what that is," says Manuel. "Father has told me all about him. Some people call him a razor-grinder because he makes a noise like the grinding of a razor. He is the largest beetle in the world. So come along, Dolores, I want to shoot some pigeons." "Aren't you afraid, Manuel, to go any farther into the woods?" whispers his sister. "I just heard a queer, rustling noise. Perhaps it is a wild dog. It may spring at us before we can get away." The children of Porto Rico have more fear of wild dogs than of anything else. They imagine all kinds of terrible things about them, and whenever they come to a dark place in the woods, they begin to fear an attack. The fact is that dogs, as well as cats, often leave their homes and run wild on account of the good times they can have in the woods. There are so many mice and birds to be caught that they need never go hungry, but there is little to fear from them. That is what Manuel thinks, sensible little fellow that he is, so he answers: "Oh, pshaw, Dolores, you never yet saw a wild dog in your life. So come along; I'll take care of you. You know I have my gun." Just at this moment Manuel spies a brown object behind a rock. Look! now a sharp-pointed nose is thrust straight up in the air, and a pair of bright eyes can be seen. "That is a dear little agouti. Please don't shoot him. See how shy he looks; he is too scared to run. Oh, what a beautiful glossy coat he has!" says Dolores. "I wish we had one to tame for a pet. Don't you, Manuel?" At first thought, Manuel was going to shoot the agouti, but he quickly thinks better of it. Any one would indeed be hard-hearted to wish to kill such a pretty, timid little creature. The agouti is a cousin of the hare and the rabbit, but lives in warmer lands than they. The children ride slowly along. Manuel shoots a couple of pigeons, and they are about to turn out of the woods when they spy a big hole in the ground near them. The appearance of the earth shows that it must have been freshly dug.