Tom Swift and the Electronic Hydrolung

e of breathing device-one that will eliminate bulky air ta

an orde

oth his Fat Man suits and his osmotic air conditioner, Tom

stic job of electronic miniaturization." After a pause he added,

The modernistic glass-walled structure-designed by Tom himself-had every tool

t's see what I'm shooting for. A small container, slung around the diver's neck?...

g with various circuit designs. He worked through the aft

tly before lunch, Tom received another call, this time from Admiral Walter. "Just wanted to keep you posted, To

l U.S. Navy units," Tom said. "Or it might mean

alter confessed gloomily. "Howe

saying he was developing a new device that might assist in th

the plastic face mask to Tom's specificatio

the young invent

l's white convertible. Tom, clad in swim trunks, was waiting for them with Chow near the edge of a mammoth c

she exclaimed, "That little gadget will supply all the air

it will. That's what

ork?" Phyl ask

er. Otherwise, although the carbon dioxide I'd breathe out would be a very small amount at a time, it soon would make the

is the water intake," Tom went on, "and this other screen

be was connected, leading up to the face mask. At the re

little tuning k

cy to the wearer's breathing rate." Tom added, "I've deci

ched his head dubiously. "Wal, I'm keepin' a

the next ten minutes the girls and Chow watched wide-eyed as he swam, walked around, and

finally climbed out. "Make me o

ul!" Phyl add

pretty pleased with it mys

lew to Fearing Island so Tom could test his invention in deep water. Boarding a small mo

oc warned. "I'll drop a signal line

eld up crossed fingers and back-flipped over the gunwale into the water

om under water. He was moving, light and self-contained, in a green, magical wo

ine along." He chuckled, as a

tom, he prowled about the ocean bed for a while, then started up again. Suddenly a st

imly in the distance. By the time he reache

ed. Gritting his teeth, he yanked hard on the

ace was contorted with pain when they final

awful!" P

while Doc Simpson injected a hypodermic to ease the pain. Chow steered the la

for several hours and later transferred to a

couple of fi

wryly. "Live

thanks to y

should think," Tom said, recalling the ma

ng. The young inventor spent the evening sketching o

a valve will feed in helium to replace it. Since helium doesn't dissolve in the blood like nitrog

nk for the helium, wo

nto a small capsule to supply the wearer's need

eat," Bud

ying back to Enterprises to make the necessary changes in his

the two boys hopped back to Fearing for a second deep-water test. This time, Tom was delighted to find t

thusiasm. "Boy, we ca

rolung be turned out in the shop as soon as possible. It was ready the following Monday morning, so Tom

ng apparatus myself. If it's successful, we'll be able to tackle two

farm site, about half a mile offshore. Each car

t deep enough to keep the plants from being discove

d the first plants been embedded than fish darted in to nib

and over our farm," Mr. Swift said, after they had climbed back into

fish would eat those plants from space w

rocketed to earth by unknown space friends w

ed by the unusual scent of those space plants. If so, we coul

oon as they had returned to Enterprises, he

ile the young inventor phoned his copilot, Mr. Swift went

n parceled in transparent plastic film. Glistening with a red metal

f fishes," Bud joked. "What w

d. "Hey! What's that character up

on the radio and barked a warning. The plane made no response. As it kept coming, Tom incr

and a nearby airport, but getting no response. Yet t

lane for a landing an