"Why, the lower print is absolutely the old Jewish subject of the cup in the sack," he muttered, and laughed again. "Was ever detective so favoured?--a representation of concealed treasure on the very wall where that treasure is! Were the brethren fools enough to put the representation of a cup on Benjamin's sack?" "Robertson!" he called to one of his men, whom, by the light at the street-end of the entry, he saw passing, "send two men here upon the instant." "Yes, sir." And then he began to examine more thoroughly the premises, to ascertain whether there were any exit-openings besides the door and window. There were none. He had a quarter of an hour or twenty minutes to wait, and five of these had not passed before he observed some one go up and tap at Abram's door. A question, though he did not hear it, must have been put by the Jew, for an answer, in a low voice, responded, "Slabberdash!" "The crack name of that fellow Clinch, whom I've been after for a week," said the officer to himself, as he kept in the shadow of a cellar which jutted out from the other houses. The Jew had again answered, for the visitor repeated to himself, as if in fear and surprise, "Red-light," and, looking cautiously about him, made off. "It is not my cue to follow," muttered the detective; "but I will do next best." And hurrying out of the mouth of the entry at the heels of the visitor, he caught the policeman on the Nicolson Street beat almost immediately. "Track that fellow," he said; "there--there, you see him--'tis Slabberdash; do not leave him or the front of his den till sunrise. I'll get a man for your beat." "Yes, sir," replied the policeman, adroitly blowing out his bull's-eye and making off at a canter. The officer returned to his post, and within the time the two assistants arrived. "Go you, Reid, to the office, and send a man to supply Nicolson Street beat till Ogilvy return; he's on commission; come back instantly." The man obeyed with alacrity. "And now, Jones, you and your neighbour take charge of that door--keep seeing it without it seeing; you understand? Keep watch; and if any one approach, scan him for Slabberdash, but take care he doesn't see you. I will relieve you at shutters-down in the morning; meanwhile, I'm at home for report or exigency." "I comprehend," replied the man, "and will be careful."