Then he began making tests and analysing, with the result that out of candle fat he distilled a beautifully clear white, intensely sweet fluid, and made a name for it: glycerine, from the Greek for “sweet,” for which, as Captain Cuttle would have said, consult your lexicon.

Then our friend the chemist tested the glycerine, and tried if it would burn; but it would not burn in the least, and he naturally enough said, Well, that stuff is no good for candles, so it may be extracted from the tallow. To make a long dissertation short, that was done at once, and the result was that, instead of the new tallow candles being soft, they were found to be hard, and to burn more clearly. Then chemicals were added, and they became harder still, and were called composites.

That was the beginning of the improvements, which subject I must carry no further, but return to our hungry lad, who, hearing the reading going on, would not interrupt his mother, but took up his candle and went to the larder to investigate for himself.

There was bread and butter, and bread and cheese, and a small piece of mutton—but this last was raw; and Vince was about to turn to the bread and cheese when his eyes lighted upon a wedge of cold apple dumpling, which he seized upon as the very thing, bore off to his bedroom, after putting his head in at the parlour door to say good-night, ate with the greatest of gusto, and then, thoroughly drowsy, tumbled into bed.

The next minute, as it seemed most vividly to Vince, the new rope that Mike took with them to the tempest-torn ridge above the Scraw was cutting into his chest and compressing it so that he could hardly breathe. But he would not complain, for fear his companion should think it was because he was too cowardly to go on down that steep slope of thirty or forty feet to look over the edge of the precipice. So he went on lower and lower, suffering horribly, but more and more determined to go on; and as he went the rope stretched out, and the slope lengthened, till he seemed to have descended for hours. Flocks of ravens came down, flapping their wings about him and making dashes with their great beaks at his eyes; while stones were loosened, rattled down into the gulf and startled clouds upon clouds of birds, which came circling up, their wings beating the air, till there was a noise like thunder.

Down to the stone at last; and upon this he sat astride, gazing at the vast gulf below, where the cove spread out farther than eye could reach, while the waters rushed by him like many cataracts of Niagara rolled into one. At last Mike’s voice came to him, in imploring tones, sounding distant, strange and familiar, begging him to come up; and he drew himself up once more, and, with the rope tightening, gave that great thrust with his heels which sent the block upon which he had ridden falling down and down, as if for ever, into space, while he hung motionless, with the line compressing his chest so that he could not breathe. He could not struggle, he could not even stir—only hang there suffocating, till his senses were leaving him fast, and a burning light flashed into his eyes. Then the rope parted, the terrible tension about his chest was relieved, and he began falling more and more swiftly, with a pleasant feeling of restfulness, till a voice said loudly:

“Vince, Vince! What is it, boy? Wake up!”

Vince not only woke up, but sat up, staring at his father and mother, who were standing in their dressing-gowns on either side of his bed.

“He must have something coming on,” said Mrs Burnet anxiously.

“Coming on!” said the Doctor, feeling the boy’s temples and then his wrist; next, transferring his hand to where he could feel the pulsation of the heart, “Nightmare!” he cried.