Many little gray spiders spin their webs in Mpuke's home, but his mother would not destroy them for the world. They are great helpers in destroying the insects which make it hard to rest comfortably at night. There are ants of different kinds, mosquitoes in abundance, swarms of flies, besides the great African cockroaches that make the walls creak as they travel along their sides. Mr. Spider is a real friend to the people because he is not afraid of these creatures, although they are his enemies as well as Mpuke's. The boy sometimes lies in bed and watches the battles fought by the spiders. There is one old fellow whose web is spun near Mpuke's head. He must be quite old, yet he is very quick, and always on the watch for his prey. "I believe he never sleeps," thinks the boy, "at least I never yet saw his eyes closed. And, oh, my! what an appetite he has; although he eats so much, yet he does not seem to grow any fatter." Mpuke likes to tell his playmates of the way in which this old gray spider mastered an immense roach. The roach was walking grandly along one day, with no thought of any one interfering with his dignity, when out pounced Mr. Spider from behind and jumped upon his back. It would have been easy enough for the roach to walk off with his enemy, if the spider had not clung with its hairy hind feet to the wall. They seemed to have hooks on the ends and dug into the bark, holding the spider and its prey in the spot where the attack was first made. Now the battle began in earnest. They fought as fiercely as two panthers. It sometimes seemed as though the roach would win the victory and carry off the spider, but the latter managed to reach over to his enemy's neck and give him a severe bite. The pain must have been great. He grew weaker and weaker, and, after two or three more bites, he gave up the battle. Mr. Spider had won a prize. Some people say that it will be fair weather to-day because there are so many fresh cobwebs on the grass. They do not know why that is a good sign, but Mpuke knows. He has often watched spiders at work, and seen the half-liquid substance drawn out from tiny tubes in the body. As it reaches the air it hardens into the silk threads which are guided into place by the spider's hind legs. This odd substance is made in an organ called the spinneret, at the very end of the spider's body. He can draw it out as he pleases, but it takes time to make it, so he is never wasteful. He therefore does not spin a web unless he feels quite sure the winds and rains will not spoil it. He has wonderful senses by which he hears and feels things which are not heard or felt by human beings. He rarely makes a mistake in his judgment of the probable weather.