ollowing up their interest in jewel clues. In this book they form a
party of five, including Jimmy Stone and Bret Hartson, boys of Ralph's
age, and a shrewd level-headed sailor named Stanley Greene. They find
a valley of diamonds in the heart of Africa.

2. THE ADVENTURE BOYS AND THE RIVER OF EMERALDS

The five adventurers, staying at a hotel in San Francisco, find that
Pedro the elevator man has an interesting story of a hidden, "river of
emeralds" in Peru, to tell. With him as guide, they set out to find
it, escape various traps set for them by jealous Peruvians, and are
much amused by Pedro all through the experience.

3. THE ADVENTURE BOYS AND THE LAGOON OF PEARLS

This time the group starts out on a cruise simply for pleasure, but
their adventuresome spirits lead them into the thick of things on a
South Sea cannibal island.

CUPPLES & LEON COMPANY, PUBLISHERS. New York.

THE BOMBA BOOKS

BY ROY ROCKWOOD

_12mo. Cloth. Illustrated. With colored jacket._

_Bomba lived far back in the jungles of the Amazon with a half-demented
naturalist who told the lad nothing of his past. The jungle boy was a
lover of birds, and hunted animals with a bow and arrow and his trusty
machete. He had a primitive education in some things, and his daring
adventures will be followed with breathless interest by thousands._

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 t