"I do not understand you."

"It is better than a misfortune, it is a crime!" he replied, in the same quiet tone.

Glenarvan looked inquiringly at Mr. Mitchell for a solution. "Yes, my Lord," replied the surveyor-general, "our inquiries have resulted in the conclusion that the catastrophe is the result of a crime. The last luggage-van has been robbed. The surviving passengers were attacked by a gang of five or six villains. The bridge was intentionally opened, and not left open by the negligence of the guard; and connecting with this fact the guard's disappearance, we may conclude that the wretched fellow was an accomplice of these ruffians."

The police-officer shook his head at this inference.

"You do not agree with me?" said Mr. Mitchell.

"No, not as to the complicity of the guard."

"Well, but granting that complicity, we may attribute the crime to the natives who haunt the Murray. Without him the blacks could never have opened a swing-bridge; they know nothing of its mechanism."

"Exactly so," said the police-inspector.

"Well," added Mr. Mitchell, "we have the evidence of a boatman whose boat passed Camden Bridge at 10:40 P. M., that the bridge was properly shut after he passed."

"True."

"Well, after that I cannot see any doubt as to the complicity of the guard."

The police-officer shook his head gently, but continuously.

"Then you don't attribute the crime to the natives?"

"Not at all."

"To whom then?"

Just at this moment a noise was heard from about half a mile up the river. A crowd had gathered, and quickly increased. They soon reached the station, and in their midst were two men carrying a corpse. It was the body of the guard, quite cold, stabbed to the heart. The murderers had no doubt hoped, by dragging their victim to a distance, that the police would be put on a wrong scent in their first inquiries. This discovery, at any rate, justified the doubts of the police-inspector. The poor blacks had had no hand in the matter.

"Those who dealt that blow," said he, "were already well used to this little instrument"; and so saying he produced a pair of "darbies," a kind of handcuff made of a double ring of iron secured by a lock. "I shall soon have the pleasure of presenting them with these bracelets as a New Year's gift."

"Then you suspect--"

"Some folks who came out free in Her Majesty's ships."

"What! convicts?" cried Paganel, who recognized the formula employed in the Australian colonies.

"I thought," said Glenarvan, "convicts had no right in the province of Victoria."

"Bah!" said the inspector, "if they have no right, they take it! They escape sometimes, and, if I am not greatly mistaken, this lot have come straight from Perth, and, take my word for it, they will soon be there again."

Mr. Mitchell nodded acquiescence in the words of the police-inspector. At this moment the wagon arrived at the level crossing of the railway. Glenarvan wished to spare the ladies the horrible spectacle at Camden Bridge. He took courteous leave of the surveyor-general, and made a sign to the rest to follow him. "There is no reason," said he, "for delaying our journey."

When they reached the wagon, Glenarvan merely mentioned to Lady Helena that there had been a railway accident, without a hint of the crime that had played so great a part in it; neither did he make mention of the presence of a band of convicts in the neighborhood, reserving that piece of information solely for Ayrton's ear. The little procession now crossed the railway some two hundred yards below the bridge, and then resumed their eastward course.

CHAPTER XII TOLINE OF THE LACHLAN

ABOUT two miles from the railway, the plain terminated in a range of low hills, and it was not long before the wagon entered a succession of narrow gorges and capricious windings, out of which it emerged into a most charming region, where grand trees, not closely planted, but in scattered groups, were growing with absolutely tropical luxuriance. As the party drove on they stumbled upon a little native boy lying fast asleep beneath the shade of a magnificent banksia. He was dressed in European garb, and seemed about eight years of age. There was no mistaking the characteristic features of his race; the crisped hair, the nearly black skin, the flattened nose, the thick lips, the unusual length of the arms, immediately classed him among the aborigines of the interior.