Time continued to roll additional years off his reel, and rolled out
Robin and Madge in length and breadth, though we cannot say much for
thickness. Time also developed their minds, and Robin gradually began
to understand a little more of the nature of that subtle fluid--if we
may venture so to call it--under the influence of which he had been
born.
"Come, Madge," he said one day, throwing on his cap, "let us go and play
at cables."
Madge, ever ready to play at anything, put on her sun-bonnet and
followed her ambitious leader.
"Is it to be land-telegraphs to-day, or submarine cables?" inquired
Madge, with as much gravity and earnestness as if the world's welfare
depended on the decision.
"Cables, of course," answered Robin, "why, Madge, I have done with
land-telegraphs now. There's nothing more to learn about them. Cousin
Sam has put me up to everything, you know. Besides, there's no mystery
about land-lines. Why, you've only got to stick up a lot o' posts with
insulators screwed to 'em, fix wires to the insulators, clap on an
electric battery and a telegraph instrument, and fire away."
"Robin, what _are_ insulators?" asked Madge, with a puzzled look.
"Madge," replied Robin, with a self-satisfied expression on his pert
face, "this is the three-hundred-thousandth time I have explained that
to you."
"Explain it the three-hundred-thousand-and-first time, then, dear Robin,
and perhaps I'll take it in."
"Well," began Robin, with a hypocritical sigh of despair, "you must know
that everything in nature is more or less a conductor of electricity,
but some things conduct it so well--such as copper and iron--that they
are called _conductors_, and some things--such as glass and
earthenware--conduct it so _very_ badly that they scarcely conduct it at
all, and are called _non-conductors_. D'ee see?"
"Oh yes, I see, Robin; so does a bat, but he doesn't see well. However,
go on."
"Well, if I were to run my wire through the posts that support it, my
electricity would escape down these posts into the earth, especially if
the posts were wet with rain, for water is a good conductor, and Mister
Electricity has an irresistible desire to bolt into the earth, like a
mole."
"Naughty fellow!" murmured Madge.
"But," continued Robin impressively, "if I fix little lumps of glass
with a hole in them to the posts, and fix my wires to these, Electricity
cannot bolt, because the glass lumps are non-conductors, and won't let
him pass."
"How good of them!" said Madge.
"Yes, isn't it? So, you see," continued Robin, "the glass lumps are
insulators, for they cut the electricity off from the earth as an island
is, or, at all events, appears to be, cut off from it by water; and
Mister Electricity _must_ go along the wires and do what I tell him. Of
course, you know, I must make my electricity first in a battery, which,
as I have often and often told you, is a trough containing a mixture of
acid and water, with plates or slices of zinc and copper in it, placed
one after the other, but not touching each other. Now, if I fix a piece
of wire to my first copper slice or plate, and the other end of it to my
last zinc slice or plate, immediately electricity will begin to be made,
and will fly from the copper to the zinc, and so round and round until
the plates are worn out or the wire broken. D'ee see?"
"No, Robin, I don't see; I'm blinder than the blindest mole."
"Oh, Madge, what a wonderful mind you must have!" said Robin, laughing.
"It is _so_ simple."
"Of course," said Madge, "I understand what you mean by troughs and
plates and all that, but what I want to know is _why_ that arrangement
is necessary. Why would it not do just as well to tempt electricity out
of its hiding-hole with plates or slices of cheese and bread, placed one
after the other in a trough filled with a mixture of glue and melted
butter?"
"What stuff you do talk, Madge! As well might you ask why it would not
do to make a plum-pudding out of nutmegs and coal-tar. There are some
things that no fellow can understand, and of course I don't know
_everything_!"
The astounding modesty of this latter remark seemed to have furnished
Madge with food for reflection, for she did not reply to it. After a
few minutes' walk the amateur electricians reached the scene of their
intended game--a sequestered dell in a plantation, through which brawled
a rather turbulent stream. At one part, where a willow overhung the
water, there was a deep broad pool. The stream entered the pool with a
headlong plunge, and issued from it with a riotous upheaval of wavelets
and foam among jagged rocks, as if rejoicing in, and rather boastful
about, the previous leap.
The game was extremely simple. The pool was to be the German Ocean, and
a piece of stout cord was to serve as a submarine cable.
The boy and girl were well-matched playmates, for Madge was ignorant and
receptive--in reference to science,--Robin learned and communicative,
while both were intensely earnest.
"Now, this is the battery," said Robin, when he had dug a deep hole
close to the pool with a spade brought for the purpose.
"Yes, and the muddy water in it will do for the mixture of acid and
water," said Madge.
As she spoke, Robin's toe caught on a root, and he went headlong into
the battery, out of which he emerged scarcely recognisable. It was a
severe, though not an electric, shock, and at first Robin seemed
inclined to whimper, but his manhood triumphed, and he burst into a
compound laugh and yell, to the intense relief of Madge, who thought at
first that he had been seriously injured.
"Never mind, Madge," said Robin, as he cleansed his muddy head; "cousin
Sam has often told me that nothing great was ever done except in the
face of difficulties and dangers. I wonder whether this should be
counted a difficulty or a danger?"
"At first I thought it a danger," said Madge, with a laugh, "but the
trouble you now have with the mud in your hair looks like a difficulty,
doesn't it?"
"Why, then, it's both," cried Robin. "Come, that's a good beginning.
Now, Madge, you get away round to the opposite side of the pool, and
mind you don't slip in, it's rather steep there."
"This is England," cried Robin, preparing to throw the line over to his
assistant, who stood eager to aid on the other side, "and you are
standing on--on--what's on the other side of the German Ocean?"
"I'm not sure, Robin. Holland, I think, or Denmark."
"Well, we'll say Denmark. Look-out now, and be ready to catch. I'm
going to connect England and Denmark with a submarine cable."
"Stay!" cried Madge, "is that the way submarine cables are laid, by
throwing them over the sea?"
"N-no, not exactly. They had a steamboat, you know, to carry over the
telegraph from England to France; but we haven't got a steamer--not even
a plank to make-believe one. Cousin Sam says that a good workman can do
his work with almost any tools that come to hand. As we have no tools
at all, we will improve on that and go to work without them. Now,
catch!"
Robin made a splendid heave--so splendid indeed that it caused him to
stagger backward, and again he stumbled into his own _battery_! This
time, however, only one leg was immersed.
"Another danger!" shouted Madge in great glee, "but I've caught the
cable."
"All right. Now make fast the shore-end to a bush, and we'll commence
telegraphing. The first must be a message from the Queen to the King of
Denmark--Or is it the President?"
"King, I think, Robin, but I'm not sure."
"Well, it won't matter. But--I say--"
"What's wrong now?"
"Why, the cable won't sink. It is floating about on the top of the
pool, and it can't be a submarine cable, you know, unless it sinks."
"Another difficulty, Robin."
"We will face and overcome it, Madge. Cast off the shore-end and I'll
soon settle that."
Having fastened a number of small stones to the cable, this persevering
electrician would certainly have overcome the difficulty if the line had
not, when thrown, unfortunately caught on a branch of the willow, where
it hung suspended just out of Madge's reach.
"How provoking!" she said, stretching out her hand to the utmost.
"Take care--you'll--ha!"
The warning came too late. The edge of the bank gave way, and Madge
went headlong into the pool with a wild shriek and a fearful plunge.
Robin stood rooted to the spot--heart, breath, blood, brain, paralysed
for the moment--gazing at the spot where his playmate had disappeared.
Another moment and her head and hands appeared. She struggled bravely
for life, while the circling current carried her quickly to the lower
end of the pool.
Robin's energies returned, as he afterwards said, like an electric
shock, but accompanied with a terrible sinking of the heart, for he knew
that he could not swim! His education in this important particular had
been neglected. He sprang round to the lower end of the pool just in
time to hold out his hand to the drowning girl. He almost touched her
outstretched hand as she swept towards the turbulent waters below, but
failed to grasp it.
For the first time in his life our little hero was called on to face
death voluntarily. Another moment and Madge would have been caught in
the boiling stream that rushed towards the fall below. He was equal to
the occasion. He sprang right upon Madge and caught her in his arms.
There was no need to hold on to her. In the agony of fear the poor
child clasped the boy in a deadly embrace. They were whirled violently
round and hurled against a rock. Robin caught it with one hand, but it
was instantly torn from his grasp. The waters overwhelmed them, and
again sent them violently towards the bank. This time Robin caught a
rock with both hands and held on. Slowly, while almost choked with the
water that splashed up into his face, he worked his right knee into a
crevice, then made a wild grasp with the left hand at a higher
projection of the rock. At the same moment his left foot struck the
bottom. Another effort and he was out of danger, but it was several
minutes ere he succeeded in dragging Madge from the hissing water of the
shallows to the green sward above, and after this was accomplished he
found it almost impossible to tear himself from the grasp of the now
unconscious girl.
At first poor Robin thought that his companion was dead, but by degrees
consciousness returned, and at last she was able to rise and walk.
Drenched, dishevelled, and depressed, these unfortunate electricians
returned home.
Of course they were received with mingled joy and reproof. Of course,
also, they were forbidden to go near the pool again--though this
prohibition was afterwards removed, and our hero ultimately became a
first-rate swimmer and diver.
Thus was frustrated the laying of the first submarine cable between
England and Denmark!