“We’ve tracked ’im down,” replied the Bloater with a chuckle.

Mr Sparks soon found Number 6. On the door a brass plate revealed “Mrs Middleton.”

“Ha! she must have it, must she, an’ won’t take no denial,” muttered the man between his teeth.

Mr Sparks observed that one of the lower windows was open, which was not to be wondered at, for the weather was rather warm at the time. He also observed that the curtains of the window were made of white flowered muslin, and that they swayed gently in the wind, not far from a couple of candles which stood on a small table. There was no one in the room at the time.

“Strange,” muttered Mr Sparks, with a grim smile, “that people will leave lights so near muslin curtains!”

Most ordinary people would have thought the candles in question at a sufficiently safe distance from the curtains, but Mr Sparks apparently thought otherwise. He entertained peculiar views about the danger of fire.

From the position which the two boys occupied they could not see the man while he was thus engaged in examining and commenting on Number 6, Conway Street, but they saw him quite well when he crossed the street, (which had only one side to it, a wall occupying the other), and they saw him still better in the course of a few seconds when a bright light suddenly streamed towards him, and illumined his villainous countenance, and they heard as well as saw him, the next instant, when he shouted “fire—fire!” and rushed frantically away.

“Hallo!” exclaimed the Bloater, and dashed off at full speed. Little Jim echoed the sentiment and followed.

Robert, alias Raw Herring, was a sharp-witted lad. He understood the case, (partly at least), in a moment, and proceeded to appropriate action. Being intimately acquainted with that part of London, he took a short cut, overshot Mr Sparks, and was first to give the alarm at the fire-station. When, therefore, Mr Sparks ran in, panting and shouting “fire!” great was his surprise to find the men already roused, and the horses being attached to the engine.

“Where away?” inquired one of the firemen, supposing that Sparks, perhaps, brought information of another fire.