cousin, came to make his home at High Towers. Tom's father, an
explorer of international fame, had departed on an expedition to
Yucatan and had not been heard from since that time. This volume,
which was called the Boy Inventors' Wireless Triumph, told of the
boys' exploits in the radio-telegraphic field and the uses to which
they were able to turn them. In a flying machine, the invention of Mr.
Chadwick, they discovered Tom's father, under remarkable
circumstances, a prisoner of a tribe of savages, and also found a
fortune in precious stones.

In the succeeding story of their adventures, the boys helped an
inventor in trouble. The Boy Inventors' Vanishing Gun, as this volume
was entitled, set forth in a graphic way the triumph of the boys over
the machinations of a gang of rascals intent on stealing the plans of
the wonderful implement of warfare which they had helped bring to
successful completion.

We next encountered the lads in the Boy Inventors' Diving Torpedo
Boat. Here they were placed in a new environment on the surface and in
the depths of the ocean. The way in which the wonderful diving craft
aided Uncle Sam in a crisis with enemies of the United States was
told, and their ingenuity and bravery played no small part in the
affair.

The Boy Inventors' Flying Ship was devoted to a detailed narrative of
the boys' long and unexpected cruise to the unexplored regions of the
Upper Amazon. The boys were shipwrecked and cast away without an
apparent hope of rescue on a yacht belonging to a German scientist,
the crew of which had mutinied. The boys' capture by a strange tribe
and subsequent escape in their Flying Ship formed thrilling portions