s with the boys and hastened off to answer
his sister's dictatorial call.

"I guess we'd better be going," said Jack, with a smile that he could
not repress.

The others agreed, and they were soon speeding back to High Towers, as
the estate of Jack's father, also a noted inventor, was called, with
plenty to talk about as a result of the events of the day.

CHAPTER V.

CHESTER CHADWICK--INVENTOR.

As readers of the preceding volumes of this series, know, Jack
Chadwick and Tom Jesson, his cousin, had won the titles of Boy
Inventors through their ingenuity and mechanical genius. Jack's
father, Chester Chadwick, was an inventor of note, and unlike the
majority of inventors, he had turned his devices to such good account
that he had accumulated a substantial fortune and was able to maintain
a fine estate, already referred to as High Towers where, with
splendidly equipped workshops and a miniature lake, he could
experiment and work out his ideas.

In the first book of this series it was related how Tom Jesson, Jack's
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