Tom Swift and His Submarine Boat; Or, Under the Ocean for Sunken Treasure

g is Su

y striking the heavy sides of it. Tom realized that this was worse than useless. He listened

w me enter, but how could he know enough to work the worm gear and close the door? Andy has had some experience with machinery, though, and one of the vaults in the bank where his father is a director closed ju

e to close from the interior of the submarine, and the heavy door, built to withs

a tiring attempt to force back the sliding do

me no response. He hardly expected that there would be any, for with his father and Mr. Sharp away, the engineer absent on an errand, and Mrs. Baggert in the house some distance o

where I am, once they are inside the shed. But-" He paused, for a horrible fear came over him. "Suppose they should come-too late?" The tank was airtight. There was enough

epeated frantically. "

ght, perhaps, it was Andy, come back to gloat over him. Then Tom knew the red-haired coward would not dare venture back. We must do Andy the justice to say that he never real

ad been imprisoned nearly two hours, and as he was a healthy, strong lad, he required plenty of oxygen. There w

projections of the gear on the inside of the door. He could no more

of a big monkey wrench. It was one he had brought into the place with him. Imbued with new hope he struck a match and lighted his lantern, which he had allowed to go out as it burned up too much of th

to the floor. There was a ringing, clanging sound, and

of the tank with the wrench. The blows will carry a good deal farther than my voice would." Every one knows how far

ned their trip in the air, the two had adopted a code of signals. As it was difficult in a high wind to shout from one end of the airship to the other, the young inventor would sometimes pound on the pipe which ran from the

to beat out regularly-one, two, three, four-then a pause, and seven blows would b

ght poor Tom "Maybe Garret or Mrs. Baggert will hear it, too, but they wo

gnal he sent vibrating from the steel sides of the tank. When one arm tired he would use the other. He grew weary, his head was aching, and there was

a dream to him, when suddenly, as he paused for a r

m! Where

harp. Then followed the t

Tom, are you

t his senses. When he revived he was lying on a pile of bagging in the

ight, Tom?" as

the lad added, as the fresh air cleared his head. "I'l

u in there?" de

no

ift. "I'll go to town as soon as you're i

y myself. I don't really believe he knew how ser

the house I heard your signal. I knew what it was in a moment. There were Mrs. Baggert and Garret talking away, and when I asked them why they didn't answer

g inventor with a faint smile. "But I'd like to kn

way be good for him. She could not forgive herself for not having answered his signal, and as for Mr. Jackson, he had started for a doctor as soon as he learned t

ches to the Advance. It was found that some alteration was required in the auxiliary propellers, an

the water next Friday

tious about Friday?"

" he added, "I wish you would go in the house and g

place, a small automobile. A man had just descended from it,

your father, but as I don't wish to lay myself open to suspici

had returned. Getting the blueprints, and asking Mr. Be

I want you to be a witness to what he says. I'm

me to the p

your determination not to enter the Government tria

ject in view now than trying for the Government prize. What it is I can't say, but it

it was of no avail. Then he

l go back and report to my firm. Have you anythin

g to keep me busy," replied the l

is stopping at the same hotel where I am to accompany me, but he has unexpectedly left, and I don't like to g

d Tom. "Was i

do you know him?" asked

at might have resulted in something serious for me," an

at the same hotel that I did. He went off yesterday afternoon, and I haven't seen him since, though he promised to go for a ride with me. He must have come over here and entered your shop unobserved. I remember now he asked m

n imagine why Andy left so hurriedly. He probably learned that a doctor had been summoned for me, though, as it happened, I

commented Mr. Berg. "Well

uto, while Tom and his f

t man," advised the a

Well, let's get back to work. Queer that he should

boundary line of the cottage property which his father had hired for the season, saw, through the hedge that bordered it, an automobile standing in th

to the man, though the latter

ey won't enter the Government contests, and they won't say why. I believe they're up to so

mself, though not so low but that Tom could hear him. "I think I'll try it. I'll g

rking order again, and the agen

er, I think I'll make him wish he'd never locked me in that tank. So you expect to find out our 'game,' eh, Mr. Berg? Well, when

e object of the treasure-seekers, and sought to de