Soon he and Mark, whom he had again induced to help him, were
busy with test tubes, rubber hose, Bunsen flames, jars of water,
and all that is required to make oxygen.
Somewhat to his own surprise, the experiment Jack tried was a
success. He collected a jarful of oxygen, generated in a way he
had thought out for himself. It was much simpler than the usual
method.
Just as he concluded the test, some one opened the laboratory
door. It was Professor Lenton.
"I have a telegram for you," he said.
"A telegram?"
"Yes. It just arrived."
Jack tore open the yellow envelope.
"It's from Professor Henderson," he said.
"Is anything the matter?" asked Mark.
"I don't know," answered Jack. "It says: 'Come home at once.'
I wonder what's wrong?"
"I hope nothing serious," said Professor Lenton.
"You may both prepare to leave this afternoon. I am sorry. Let
me hear from you when you reach Professor Henderson. I trust
nothing has happened to him. He is too great a scientist for us
to lose."
CHAPTER III
WASHINGTON MEETS THE BOYS
All thoughts of experiments were driven from the minds of Jack
and Mark by the telegram.
Pages:
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30