They have heard that there is a treasure located in the vicinity of Kilauea, the largest active volcano in the world, and go in search of it.

Their numerous adventures will be followed with much interest.
_PRESS OPINIONS OF CAPTAIN BONEHILL'S BOOKS FOR BOYS_ "Captain Bonehill's stories will always be popular with our boys, for the reason that they are thoroughly up-to-date and true to life.

As a writer of outdoor tales he has no rival."-- _Bright Days_.
"The story is by Captain Ralph Bonehill, and that is all that need be said about it, for all of our readers know that the captain is one of America's best story-tellers, so far as stories for young people go."-- _Young People of America_.
"The story is excellently told, and will please any intelligent boy into whose hands it may fall."-- _Charleston (S.C.) News_.
"We understand that Captain Bonehill will soon be turning from sporting stories to tales of the war.

This field is one in which he should feel thoroughly at home.

We are certain that the boys will look eagerly for the Bonehill war tales."-- _Weekly Messenger_.
THE MERSHON COMPANY 156 Fifth Avenue, New York Rahway, N.J.
[Illustration] Mrs.L.T.