There came another visitor.  This time it was a lanky boy, with, a blue bag over his shoulder and a notebook and pencil-stump in his hand.  He nodded to the assistant as to an old friend with whom one may be at ease, set down his bag, opened his notebook, and nibbled his stump.  Then he read aloud, with a comma or semicolon between each, a dozen or twenty titles.  They were the names of the books which his employer wished to pick up.  The red-eyed assistant listened, and shook his head.  Then the boy, without another word, shouldered his bag and departed, on his way to the next second-hand book-shop.

He was followed, at a decent interval, by another caller.  This time it was an old gentleman who opened the door, put in his head, and looked about him with a quick and suspicious glance.  At sight of the assistant he nodded and smiled in the most friendly way possible, and came in.

“Good-morning, Mr. James; good-morning, my friend.  Splendid weather.  Pray don’t disturb yourself.  I am just having a look round—­only a look round, you know.  Don’t move, Mr. James.”

He addressed Mr. James, but he was looking at the shelves as he spoke, and, with the habit of a book-hunter, taking down the volumes, looking at the title-pages and replacing them; under his arm he carried a single volume in old leather binding.

Mr. James nodded his head, but did disturb himself; in fact, he rose with a scowl upon his face, and followed this polite old gentlemen all round the shop, placing himself close to his elbow.  One might almost suppose that he suspected him, so close and assiduous was his assistance.  But the visitor, accepting these attentions as if they were customary, and the result of high breeding, went slowly round the shelves, taking down book after book, but buying none.  Presently he smiled again, and said that he must be moving on, and very politely thanked Mr. James for his kindness.

“Nowhere,” he was so good as to say, “does one get so much personal kindness and attention as at Emblem’s.  Good-morning, Mr. James; good-morning, my friend.”

Mr. James grunted; and closed the door after him.

“Ugh!” he said with disgust, “I know you; I know your likes.  Want to make your set complete—­eh?  Want to sneak one of our books to do it with, don’t you?  Ah!” He looked into the back shop before he returned to his paste and his slips.  “That was Mr. Potts, the great Queen Anne collector, sir.  Most notorious book-snatcher in all London, and the most barefaced.  Wanted our fourth volume of the ‘Athenian Oracle.’  I saw his eyes reached out this way, and that way, and always resting on that volume.  I saw him edging along to the shelf.  Got another odd volume just like it in his wicked old hand, ready to change it when I wasn’t looking.”

“Ah,” said Mr. Emblem, waking up from his dream of Iris and her father’s letter; “ah, they will try it on.  Keep your eyes open, James.”