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."

"No thanks, as usual," grumbled Mr. James as he returned to his gum
and his scissors. "Might as well have left him to snatch the book."

Here, however, James was wrong, because it is the first duty of an
assistant to hinder and obstruct the book-snatcher, who carries on his
work by methods of crafty and fraudulent exchange rather than by plain
theft, which is a mere brutal way. For, first, the book-snatcher marks
his prey; he finds the shop which has a set containing the volume
which is missing in his own set; next, he arms himself with a volume
which closely resembles the one he covets, and then, on pretense of
turning over the leaves, he watches his opportunity to effect an