They made long round plugs of soft pine to fit the holes exactly, each one scored with a channel a quarter of an inch deep, which was on the upper side when they had driven the plugs into their places, and was intended to lead the water along the wood, so as to wet it more thoroughly. To do this Malipieri poked long cotton wicks into each channel with a wire, as far as possible. He made Masin buy half-a-dozen coarse sponges and tied one upon the upper end of each projecting plug. Finally he wet all the sponges thoroughly and wound coarse cloths loosely round them to keep in as much of the water as possible. By pouring on water from time to time the soft wood was to be ultimately wet through, the wicks leading the moisture constantly inward, and in the end the great block must inevitably be split into halves. It is the prehistoric method, and there never was any other way of cleaving very hard stone until gunpowder first brought in blasting. It is slow, but it is quite sure.
The place where the two men had been working was many feet below the level of the courtyard, but the porter could now and then hear the sound of blows echoing underground through the vast empty cellars, even when he stood near the great entrance.
Toto heard the noise too, one day, as he was standing still to light his pipe in the Vicolo dei Soldati. When it struck his ear he let the match burn out till it singed his horny fingers. His expression became even more blank than usual, but he looked up and down the street, to see if he were alone, and upward at the windows of the house opposite. Nobody was in sight, but in order to place his ear close to the wall and listen, he made a pretence of fastening his shoe-string. The sound came to him from very far beneath, regular as the panting of an engine. He knew his trade, and recognized the steady hammering on the end of a stone drill, very unlike the irregular blows of a pickaxe or a crowbar. The "moles" were at work, and knew their business; sooner or later they would break through. But Toto could not guess that the work was being actually done by Malipieri and his servant, without help. One man alone could not do it, and the profound contempt of the artisan for any outsider who attempts his trade, made Toto feel quite sure that one or more masons had been called in to make a breach in the foundation wall. As he stood up and lighted his pipe at last, he grinned all alone, and then slouched on, his heart full of very evil designs. Had he not always been the mason of the Palazzo Conti? And his father before him? And his grandfather, who had lost his life down there, where the moles were working? And now that he was turned out, and others were called in to do a particularly confidential job, should he not be revenged? He bit his pipe and thrust his rough hands deep into the pockets of his fustian trousers, and instead of turning into the wine shop to meet Gigi, he went off for a walk by himself through all the narrow and winding streets that lie between the Palazzo Conti and Monte Giordano.
He came to no immediate conclusion, and moreover there was no great hurry. He knew well enough that it would take time to pierce the wall, after the drilling was over, and he could easily tell when that point was reached by listening every day in the Vicolo dei Soldati. It would still be soon enough to play tricks with the water, if he chose that form of vengeance, and he grinned again as he thought of the vast expense he could force upon Volterra in order to save the palace. But he might do something else. Instead of flooding the cellars and possibly drowning the masons who had ousted him, he could turn informer and defeat the schemes of Volterra and Malipieri, for he never doubted but that if they found anything of value they meant to keep the whole profit of it to themselves.
He had the most vague notions of what the treasure might be. When the fatal accident had happened his grandfather had been the only man who had actually penetrated into the innermost hiding-place; the rest had fled when the water rose and had left him to drown. They had seen nothing, and their story had been handed down as a mere record of the catastrophe. Toto knew at least that the vaults had then been entered from above, which was by far the easier way, but a new pavement had long ago covered all traces of the aperture.
There was probably gold down there, gold of the ancients, in earthen jars. That was Toto's belief, and he also believed that when it was found it would belong to the government, because the government took everything, but that somehow, in real justice, it should belong to the Pope. For Toto was not only a genuine Roman of the people, but had always regarded himself as a sort of hereditary retainer of an ancient house.
His mind worked slowly. A day passed, and he heard the steady hammering still, and after a second night he reached a final conclusion. The Pope must have the treasure, whatever it might be.
That, he decided, was the only truly moral view, and the only one which satisfied his conscience. It would doubtless be very amusing to be revenged on the masons by drowning them in a cellar, with the absolute certainty of never being suspected of the deed. The plan had great attractions. The masons themselves should have known better than to accept a job which belonged by right to him, and they undoubtedly deserved to be drowned. Yet Toto somehow felt that as there was no woman in the case he might some day, in his far old age, be sorry for having killed several men in cold blood. It was really not strictly moral, after all, especially as his grandfather's death had been properly avenged by the death of the murderer.
As for allowing the government to have a share in the profits of the discovery, that was not to be thought of. He was a Roman, and the Italian government was his natural enemy. If he could have turned all the "lost water" in the city upon the whole government collectively, in the cellars of the Palazzo Conti, he would have felt that it was strictly moral to do so. The government had stolen more than two years of his life by making him serve in the army, and he was not going to return good for evil. With beautiful simplicity of reasoning he cursed the souls of the government's dead daily, as if it had been a family of his acquaintance.
But the Pope was quite another personage. There had always been popes, and there always would be till the last judgment, and everything connected with the Vatican would last as long as the world itself. Toto was a conservative. His work had always kept him among lasting things of brick and stone, and he was proud of never having taken a day's wages for helping to put up the modern new-fangled buildings he despised. The most lasting of all buildings in the world was the Vatican, and the most permanent institution conceivable was the Pope. Gigi, who made wretched, perishable objects of wood and nails and glue, such as doors and windows, sometimes launched into modern ideas. Toto would have liked to know how many times the doors and windows of the Palazzo Conti had been renewed since the walls had been built! He pitied Gigi always, and sometimes he despised him, though they were good friends enough in the ordinary sense.