old how he saved these people.

When Tom went among the diamond makers he had more strange adventures,
on that trip discovering the secret of phantom mountain. He had bad
luck when he went to the caves of ice, for there his airship was
wrecked.

When Tom made the trip in his sky racer he broke all records for an
aerial flight, incidentally saving his father's life. It was some time
after this when he invented an electric rifle, and went to elephant
land, to rescue some missionaries from the red pygmies.

The eleventh volume of the series is called "Tom Swift in the Land of
Gold," and relates his adventures underground, while the next one tells
of a new machine he invented--an air-glider--which he used to save the
exiles of Siberia, incidentally, on that trip, finding a valuable
deposit of platinum.

As I have said, it was on his trip to giant land that Tom got his big
servant. This book, the thirteenth of the series, is called "Tom Swift
in Captivity," for the giants captured him and his friends, and it was
only by means of their airship that they made their daring escape.

Tom had been back from the strange land some time now. One giant he had
turned over to the circus representative for whom he had undertaken the
mission, and the other he retained to work around his shop, as
Eradicate was getting too old. It was now winter, and there had been
quite a fall of snow the day before Mr. Period, the odd moving picture
man, called on Tom. There were many big drifts outside the building.

Tom had fitted up a well-equipped shop, where he and his father worked
on their inventions. Occasionally Ned Newton, or Mr. Damon, would come
over to help them, but of late Tom had been so busy on his noiseless
motor that he had not had time to even see his friends.

"Well, I guess the five minutes have passed, and my mind is made up,"
thought Tom, as he looked at his watch. "I might as well tell Mr.
Period that I can't undertake his commission. In the first place it
isn't going to be an easy matter to make an electric moving picture
camera. I'd have to spend a lot of time studying up the subject, and
then I might not be able to get it to work right.

"And, again, I can't spare the time to go to all sorts of wild and
impossible places to get the pictures. It's all well enough to talk
about getting moving pictures of natives in battle, or wild beasts
fighting, or volcanoes in action, but it isn't so easy to do it. Then,
too, I'd have