It is impossible to imagine anything more hideously desolate and sombrely wild than the high ground behind Mount Etna. The huge eruptions of former and recent times have for ages sent down rivers of liquid stone and immeasurable clouds of fine black ashes, which have all hardened roughly into a conformation which is rugged but not wholly irregular, for the fissures mostly follow the downward direction of the slope, westward from the volcano. All over the broad black surface the spurge grows in patches during the spring, and somehow the vivid yellow of the flowers makes the dark stone and hardened ash look still darker and more desolate. Here and there, every two or three miles, there are groups of deserted huts built of black tufo, doorless and windowless, and almost always on the edge of some bit of arable land that stretches westward between two old lava beds. The distances are so great that the peasants move out in a body to cultivate these outlying fields at certain times of the year, and sleep in the improvised villages until the work is done, when they go back to the towns, leaving the crops to take care of themselves until harvest time. In the guerilla warfare which breaks out periodically between the carabineers and the outlaws, the stone huts are important points of vantage, and once or twice have been the scene of hard-fought battles. Being of stone, though roughly built, and being pierced with mere holes for windows, they are easily defended from within by men armed with repeaters and plentiful ammunition.

After the little excitement caused by the pursuit of the unknown rider, two of the troopers rode before the carriage, and three followed it, while all got their rifles across their saddle-bows, ready for action. They knew well enough that as long as they kept together, even a large band of brigands would not attack them on the open road, but there were plenty of narrow places where the earth was high on each side, and where a single well-directed volley might easily have killed many of the party. Since the outlaws' latest invention of shooting the carabineers in order to disguise themselves in their uniforms, the troopers were more than ever cautious and on the alert against a surprise.

But nothing happened. The single horseman had disappeared altogether, having probably taken to the broken land for greater safety, and the carriage jogged steadily on across the high land, towards its destination, with a regular jingling of harness bells, and an equally rhythmic clanking of sabres.

'A little quicker, Tatò,' said the sergeant to the padrone, from time to time, but no one else said anything.

Both San Giacinto and Orsino were weary of the long drive when, at an abrupt curve of the road, the horses slackened speed, to turn out of the highway, to the right.

'There is Camaldoli,' said Tatò, turning round to speak to them for the first time since they had started. 'You can see the Druse's tower above the trees, and the river is below.'

So far as the two gentlemen could see there was not another habitation in sight, though it was no very great distance to the village of Santa Vittoria, beyond the next spur of Etna. The ancient building, of which only the top of one square black tower appeared, was concealed by a dense mass of foliage of every kind. Below, to the right and towards the mountain stream which Tatò called a river, the land was covered with wild pear trees, their white blossoms all out and reflecting the lowering sun. Nearer the building, the pink bloom of the flowering peaches formed a low cloud of exquisite colour, and the fresh green of the taller trees of all kinds made a feathery screen above and a compact mass of dark shadow lower down. The narrow drive was thickly hedged with quantities of sweetbrier and sweet hawthorn, which increased as the road descended, till it filled everything up to a man's height and higher. The way was so narrow that when the carabineers tried to ride on each side of the carriage, they found it impossible to do so without being driven into the tangle of thorns at every step. The whole party moved forward at a quick trot, and Orsino understood what Basili the notary had said about the bushes, so that even he laid his rifle across his knees and peered into the brambles from time to time, half expecting to see the muzzle of a gun sticking through the green leaves and white flowers.

The avenue seemed to be about half a mile long. In the middle of it the trees were so thick as to make it almost gloomy, even in the broad afternoon daylight. The road was rough and stony.

Suddenly the horse of one of the carabineers ahead stumbled and fell heavily, and the other trooper threw his horse back on its haunches with an exclamation. Almost at the same instant, the sharp crack of a rifle rang through the trees on the right; and the bullet, singing overhead, cut through the branches just above the carriage, so that a twig with its leaves dropped upon Orsino's knees. Another shot, fired very low down, struck a spoke of one of the carriage wheels, and sent the splinters flying, burying itself somewhere in the body of the vehicle. Another and another followed, all fired either far too high or much too low to strike any of the party. As the shots all came from the same side, however, the sergeant of carabineers sprang to the ground and plunged into the brush on that side, his rifle in his hand, calling to his men to follow him. San Giacinto stood up and knelt on the cushion of the carriage, though he knew that he could not fire in the direction taken by the carabineers, lest he should hit one of them by accident.