The four friends, cold, impassive, and relentless, satisfied themselves for some time with fixing their eyes upon the traitor, while he, quite beside himself, with wide-opened mouth and eyes, was doing his best to articulate something; but all he could mutter was, "Signore--I--am--not," and other less intelligible monosyllables. The calmness of the four Romans was somewhat savage, but for their deep cause of hatred; and if any one could have contemplated the scene he would have been reminded forcibly of the fable of the rat under the inexorable gaze of the terrier-dog, which watches every movement, and then pounces out upon it, crunching all the vermin's bones between its teeth. Or could a painter have witnessed that silent assembly, he would have found a subject for a splendid picture of deep-seated wrath and terror. We have already described the persons of the three friends--true types of the ancient Roman--with fine and artistic forms. Gasparo was even more striking--one of those heads which a French photographist would have delighted to "take" as the model of an Italian brigand--and the picture would have been more profitable than the likeness of any European sovereign. He was indeed, in his old age, a superb type of a brigand, but a brigand of the nobler sort. One of those who hate with a deadly hatred the cutthroat rabble; one who never stained himself with any covetous or infamous action, as the paid miscreants of the priests do, who commit acts that would fill even a panther's heart with horror. Even the successor of Gianni would have made a valuable appearance in a _quadro caratteristico_, for certainly no subject could have served better to display panic in all its disgusting repulsiveness. Glued to the wall behind him, he would, if his strength had equalled his wish, have knocked it down, or bored his way through it to get farther from those four terrible countenances, which stared impassively and mercilessly at him, meditating upon his ruin, perhaps upon his death. The austere voice of Muzio, already described as the chief of the Roman contropolizia, was the first to break that painful silence.