He had under his arm half-a-dozen volumes, which, without a word, he laid before Mr.Emblem, and untied the string.
"You ought to know this book," he said without further introduction.
Mr.Emblem looked doubtfully at the visitor.
"You sold it to me twenty-five years ago," he went on, "for five pounds." "I did.

And I remember now.

You are Mr.Frank Farrar.

Why, it is twenty-five years ago!" "I have bought no more books for twenty years and more," he replied.
"Sad--sad! Dear me--tut, tut!--bought no books?
And you, Mr.Farrar, once my best customer.

And now--you do not mean to say that you are going to sell--that you actually want to sell--this precious book ?" "I am selling, one by one, all my books," replied the other with a sigh.