Suddenly he felt a stinging pain in his bare shoulder and in one of his exposed feet. As he threw out his hands desperately, tiny clicking teeth cut the flesh of wrists and arms. The scent of blood seemed to madden the whole company of these deaths-in-the-dark, and, although the actual bites were made by the little vampire-bats, yet at the sight of them feasting, the other night-fliers descended upon the boy like a black cloud and clustered around the little wounds, as Will had seen moths gather around syrup spread on trees of a warm June night.
The sting of their bites lasted for only a second, and the flapping of their wings made a cool current of air which seemed to drug his senses. Dreamily he felt them against him, knew that they were draining his life, yet lacked the will-power to drive them away. Suddenly there flashed into his mind all that he had heard and read of the deadly methods of these dark enemies of mankind. With a shriek, he threw out his arms through the furry cloud that hung over him and sprang out of his hammock.
At his scream, Professor Ditson rushed in with a flash-light, followed by Pinto, Hen, and Joe, while Jud slept serenely through the whole tumult. They found Will dripping with blood from a dozen little punctures made by the sharp teeth of the bats, and almost exhausted from fright and the loss of blood. Then came pandemonium. Seizing sticks, brooms, machetes, anything that came to hand, while Will sank back into his hammock, the others attacked the bats. Lighted by the flash of Professor Ditson's electric light, they drove the squeaking, shrieking cloud of dark figures back and forth through the little room until the last one had escaped through the torn netting or was lying dead on the floor.
Twenty-seven bats altogether were piled in a heap when the fight was over.
At last their first week in this new world of beauty and mystery came to an end. At Belem they boarded a well-appointed steamer and embarked for the thousand-mile voyage to Manaos, which is only six degrees from the equator and one of the hottest cities of the world. There followed another week of a life that was strange and new to the travelers from Cornwall. There were silent, steaming days when the earth seemed to swoon beneath the glare of the lurid sun, and only at night would a breath of air cross the water, which gleamed like a silver burning-glass. For their very lives' sake, white men and Indians alike had learned to keep as quiet and cool as possible during those fiery hours. Only Hen, coming from a race that since the birth of time had lived close to the equator, moved about with a cheerfulness which no amount of heat or humidity could lessen. At night, when the fatal sun had reluctantly disappeared in a mass of pink and violet clouds, the life-bringing breeze would blow in fresh and salt from the far-away sea, and all living creatures would revive. The boys soon learned that, in the mid-heat of a tropical summer, the night was the appointed time for play and work, and they slept during the day as much as possible in shaded, airy hammocks.