hat's what I think," agreed the baggageman.

And this was very possible, as many strangers had been attracted to
the scene of the wreck. Mrs. Delamont offered a reward of a hundred
dollars for the return of her prize dog, and this spurred a number of
volunteer searchers to work.

They scurried about the fields near the scene of the accident, but in
spite of enticing calls and whistles no Rex answered.

"I'm afraid he is gone," said Alice, who had taken quite a liking to
Mrs. Delamont, in spite of the lady's rather "loud" dress and
manners.

"Oh, I must find him!" exclaimed Mrs. Delamont. "I shall have to
advertise," she went on. "This is not the first time he has been
taken. He is such a fine-looking dog that many are attracted to him.
And he is so friendly! Oh, Rex, where are you?"

But Rex III was not to be found, and the trainmen could no longer
delay. A last search was made in the surrounding fields, and then the
passengers went back to their cars. A substitute engineer and fireman
had come with the wrecking crew.

Mrs. Delamont made many inquiries as to whether anyone had seen her
dog being led away, but no one had, and lamenting over her loss, and
dwelling on the fine qualities and value of her pet, she resumed her
seat in the parlor car.

"Well, I sure did get some fine pictures," remarked Russ, as he came
back to the others of the film company. "It will be something for our
newspaper service, all right."

"We'll send them back to New York from the next station," said Mr.
Pertell, "and wire that they're on the way. They can develop and
print them there."

In the first book of this series I have described the mechanical part
of moving pictures, how they are made and prepared for projection on
the screen. To briefly sum it up, I might say that the pictures, or
negatives, are taken on a continuous strip of celluloid film in a
specially prepared camera, which takes views at the rate of sixteen
per second. Then, after this long strip of negative is developed, a
positive, as it is called, is made, and this is run through the
projecting machine in the theatre. Thus, by means of powerful lenses,
and intense lights, the miniature pictures, less than an inch in
width, are enlarged to life size.

In order to make sure that the passengers should reach their
destinations the train that had been in the wreck was stopped at the
next important station. There a new baggage car was put on, and
another engine. Russ to