1. BOMBA THE JUNGLE BOY _or The Old Naturalist's Secret_
In the depth of the jungle Bomba lives a life replete with thrilling situations. Once he saves the lives of two American rubber hunters who ask him who he is, and how he had come into the jungle. He sets off to solve the mystery of his identity.
2. BOMBA THE JUNGLE BOY AT THE MOVING MOUNTAIN _or The Mystery of the Caves of Fire_
Bomba travels through the jungle, encountering wild beasts and hostile natives. At last he trails the old man of the burning mountain to his cave and learns more concerning himself.
3. BOMBA THE JUNGLE BOY AT THE GIANT CATARACT _or Chief Nascanora and His Captives_
From the Moving Mountain Bomba travels to the Giant Cataract, still searching out his parentage. Among the Pilati Indians he finds some white captives, and an aged opera singer who is the first to give Bomba real news of his forebears.
4. BOMBA THE JUNGLE BOY ON JAGUAR ISLAND _or Adrift on the River of Mystery_
Jaguar Island was a spot as dangerous as it was mysterious and Bomba was warned to keep away. But the plucky boy sallied forth and met adventures galore.
5. BOMBA THE JUNGLE BOY IN THE ABANDONED CITY _or A Treasure Ten Thousand Years Old_
Years ago this great city had sunk out of sight beneath the trees of the jungle. A wily half-breed and his tribe thought to carry away its treasure of gold and precious stones. Bomba follows.