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Spark in this world—a grand, glowing, gushing fellow—who has not his equal anywhere. He is old as the hills—perhaps older—and wide as the world—perchance wider. Similar to ordinary sparks in some respects, he differs from them in several important particulars. Like many, he is “fast,” but immeasurably faster than all other sparks put together. Unlike them, however, he submits to be led by master minds. Stronger than Hercules, he can rend the mountains. Fleeter than Mercury, he can outstrip the light. Gentler than Zephyr, he can assume the condition of a current, and enter our very marrow without causing pain. His name is Electricity. No one knows what he is. Some philosophers have said that he is a fluid, because he flows. As well might they call him a wild horse because he bolts, or a thief because he lurks! We prefer to call him a Spark, because in that form only is he visible—at least when handled by man.

      Talking of that, it was not until the last century that master minds found out how to catch and handle our Spark. In all the previous centuries he had been roaming gaily about the world in perfect freedom; sometimes gliding silently to and fro like an angel of light; sometimes leaping forth with frightful energy in the midst of raging tempest, like a destructive demon—ripping, rending, shattering all that attempted to arrest his course. Men have feared and shunned him since the beginning of time, and with good reason, for he has killed many of the human race.

      But although uncaught and untamed by them, our Spark was not altogether unknown to the ancients. So far back as the year 600 before the Christian era, Thales, one of the Greek sages, discovered that he hid himself in amber, a substance which in Greek is named electron—hence his name Electricity; but the ancients knew little about his character, though Thales found that he could draw him from his hiding-place by rubbing him with silk and some other substances. When thus rubbed he became attractive, and drew light creatures towards him—not unlike human sparks! He also showed himself to be fickle, for, after holding these light creatures tight for a brief space, he let them go and repelled them.

      It was not till the days of good Queen Bess, towards the end of the sixteenth century, that a Dr Gilbert discovered that the wild fellow lay lurking in other substances besides amber—such as sulphur, wax, glass, etcetera. It is now known that Electricity permeates all substances more or less, and only waits to be roused in order to exhibit his amazing powers. He is fond of shocking people’s feelings, and has surprised his pursuers rather frequently in that way. Some of them, indeed, he has actually shocked to death!

      It would take a huge volume to give a detailed account of all the qualities, powers, and peculiarities of this wild Spark. We will just touch on a few facts which are necessary to the elucidation of our tale.

      A great event in the world’s history happened in the year 1745. It was nothing less than the capture and imprisonment of wild, daring, dashing Electricity. To the Dutch philosophers belongs the honour of catching him. They caught him—they even bottled him, like ordinary spirits, and called his prison a Leyden Jar.

      From that date our Spark became the useful and obedient slave of man. Yet is he ever ready, when the smallest conceivable door, hole, or chink is left open, to dash out of the prison-house man has made for him, and escape into his native earth.

      He has no hope now, however, of escaping altogether, for he cannot resist the allurement of rubbing, by which, as well as by chemical action and other means, we can summon him, like the genii of Aladdin’s lamp, at any moment, from the “vasty deep,” and compel him to do our work.

      And what sort of work, it may be asked, can this volatile fellow perform? We cannot tell all—the list is too long. Let us consider a few of them. If we fabricate tea-pots, sugar-basins, spoons, or anything else of base metal, he can and will, at our bidding, cover the same with silver or yellow gold. If we grow dissatisfied with our candles and gas, he will, on being summoned and properly directed by the master minds to whom he owns allegiance, kindle our lamps and fill our streets and mansions with a blaze of noonday splendour. If we grow weary of steam, and give him orders, he will drive our tram-cars and locomotives with railway speed, minus railway smoke and fuss. He is a very giant in the chemist’s laboratory, and, above all, a swift messenger to carry the world’s news. Even when out and raging to and fro in a wild state, more than half-disposed to rend our mansions, and split our steeples, and wreck our ships, we have only to provide him with a tiny metal stair-case, down which he will instantly glide from the upper regions to the earth without noise or damage. Shakespeare never imagined, and Mercury never accomplished, the speed at which he travels; and he will not only carry our news or express our sentiments and wishes far and wide over the land, but he will rush with them, over rock, sand, mud, and ooze, along the bottom of the deep deep sea!

      And this brings us to a point. Some of the master minds before mentioned, having conceived the idea that telegraphic communication might be carried on under water, set about experimenting. Between the years 1839 and 1851 enterprising men in the Old World and the New suggested, pondered, planned, and placed wires under water, along which our Spark ran more or less successfully.

      One of the difficulties of these experiments consisted in this, that, while the Spark runs readily along one class of substances, he cannot, or will not, run along others. Substances of the first class, comprising the metals, are called conductors; those of the second class, embracing, among other things, all resinous substances, are styled non-conductors. Now, water is a good conductor. So that although the Spark will stick to his wires when insulated on telegraph-posts on land, he will bolt from them at once and take to flight the moment he gets under water. This difficulty was overcome by coating the wires with gutta-percha, which, being a non-conductor, imprisoned the Spark, and kept him, as it were, on the line.

      A copper wire covered in this manner was successfully laid between England and France in 1850. When tested, this cable did not work well. Minute imperfections, in the form of air-holes in the gutta-percha, afforded our Spark an opportunity to bolt; and he did bolt, as a matter of course—for electricity has no sense of honour, and cannot be trusted near the smallest loop-hole. The imperfections were remedied; the door was effectually locked, after which the first submarine cable of importance was actually laid down, and worked well. French and English believers turned up hands and eyes in delighted amazement, as they held converse across the sea, while unbelievers were silenced and confounded.

      This happy state of things, however, lasted for only a few hours. Suddenly the intercourse ceased. The telegraphists at both ends energised with their handles and needles, but without any result. The cable was dumb. Our Spark had evidently escaped!

      There is no effect without a cause. The cause of that interruption was soon discovered.

      Early that morning a French fisherman had sauntered down to the port of Boulogne and embarked in his boat. A British seaman, having nothing to do but smoke and meditate, was seated on a coil of rope at the time, enjoying himself and the smells with which that port is not unfamiliar. He chanced to be a friend of that French fisherman.

      “You’re early afloat, Mounseer,” he said.

      “Oui, monsieur. Vill you com’? I go for feesh.”

      “Well, wee; I go for fun.”

      They went accordingly and bore away to the northward along the coast before a light breeze,—past the ruined towers which France had built to guard her port in days gone by; past the steep cliffs beyond Boulogne; past the lovely beach of Wimereux, with its cottages nestled among the sand-hills, and its silted-up harbour, whence Napoleon the First had intended to issue forth and descend on perfidious Albion—but didn’t; past cliffs, and bays, and villages further on, until they brought up off Cape Grisnez. Here the Frenchman let down his trawl, and fished up, among other curiosities of the deep, the submarine cable!

      “Behold! fat is dis?” he exclaimed, with glaring eyes, uplifted brows, shoulders shrugged, hands spread out, and fingers expanded.

      “The sea-sarpint grow’d thin,” suggested the Englishman.

      “Non; c’est seaveed—veed de most ’strordinair in de vorld. Oui, donnez-moi de hache, de hax, mon ami.”

      His friend handed him the axe, wherewith lie cut off a small portion of the cable and let the end go. Little did that fisherman know that he had also let our Spark go free, and cruelly dashed, for a time