"Yes, and I've got to hustle if I invent that camera," added
Tom. "It's got to be a specially fast one, and one that can take
pictures from a long distance. Electricity is the thing to use, I
guess."

"Then you are really going off on this trip. Tom?" asked his
father, rather wistfully.

"I'm afraid I am," replied his son. "I thought I could stay at
home for a while, but it seems not."

"I was in hopes you could give me a little time to help me on
my gyroscope invention," went on the aged man. "But I suppose it
will keep until you come back. It is nearly finished."

"Yes, and I don't like stopping work on my noiseless motor,"
spoke Tom. "But that will have to wait, too."

"Do you know where you are going?" inquired Ned.

"Well, I'll have to do considerable traveling I suppose to get
all the films he wants. But once I'm started I'll like it I
guess. Of course you're coming, Ned."

"I hope so."

"Of course you are!" insisted Tom, as if that settled it. "And
I'm sure Mr. Damon will go also. I haven't seen him in some time.
I hope he isn't ill."