Every now and then he sipped his wine, but there was no perceptible change in his manner, for he was careful to keep himself just at the same level of excitement, neither more nor less.
Half an hour later he was smoking his pipe in the Piazza di Spagna, lounging near the great fountain in the sunshine, his eyes generally turned towards the door of the hotel. He waited a long time, and replenished his pipe more than once.
"This would be the only thing wanting," he said impatiently and half aloud. "That just to-day he should not go out."
But Lord Redin appeared at last, dressed as though he were going to make a visit. He looked about the square, standing still on the threshold for a moment, and a couple of small open cabs drove up. But he shook his head, consulted his watch, and strode away in the direction of the Propaganda.
Stefanone guessed that he was going to the Palazzetto Borgia, and followed him as usual at a safe distance, threading the winding ways towards the Piazza di Venezia. There used to be a small café then under the corner of that part of the Palazzo Torlonia which has now been pulled down. Lord Redin entered it, and Stefanone lingered on the other side of the street. A man passed him who sold melon seeds and aquavitæ, and Stefanone drank a glass of the one and bought a measure of the other. The Romans are fond of the taste of the tiny dry kernel which is found inside the broad white shell of the seed. Presently Lord Redin came out, wiping his mouth with his handkerchief, and went on. Stefanone followed him again, walking fast when his enemy had turned a corner and slackening his speed as soon as he caught sight of him again.
Francesca was out. He saw Lord Redin's look of annoyance as the latter turned away after speaking with the porter, and he fell back into the shadow of a doorway, expecting that the Scotchman would take the street by which he had come. But Dalrymple turned down the narrow lane beside the palace, in the direction of the Tiber. Stefanone's bloodshot eyes opened suddenly as he sprang after him; with a quick movement he got his knife out, opened it, and thrust his hand with it open into the wide pocket of his jacket. Lord Redin had never gone down that lane before, to Stefanone's knowledge, and it was a hundred to one that at that hour no one would be about. Stefanone himself did not know the place.
Dalrymple must have heard the quick and heavy footsteps of the peasant behind him, but it would not have been at all like him to turn his head. With loose, swinging gait he strode along, and his heavy stick made high little echoes as it struck the dry cobble-stones.
Stefanone was very near him. His eyes glared redly, and his hand with the knife in it was half out of his pocket. In ten steps more he would spring and strike upwards, as Romans do. He chose the spot on the dark overcoat where his knife should go through, below the shoulder-blade, at the height of the small ribs on the left side. His lips were parted and dry.
There was a loud scream of anger, a tremendous clattering noise, and a sound of feet. Stefanone turned suddenly pale, and his hand went to the bottom of his pocket again.
On an open doorstep lay a copper 'conca'—the Roman water jar—a wretched dog was rushing down the street with something in its mouth, in front of Lord Redin, a woman was pursuing it with yells, swinging a small wooden stool in her right hand, to throw it at the dog, and the neighbours were on their doorsteps in a moment. Stefanone slunk under the shadow of the wall, grinding his teeth. The chance was gone. The streets beyond were broader and more populous.