"Well, one of these is perfectly understandable," said Roger. "Here, where it says 329 ff. cf. W. W. That simply means 'pages 329 and following, compare Woodrow Wilson.' I remember jotting that down not long ago, because that passage in the book reminded me of some of Wilson's ideas. I generally note down in the back of a book the numbers of any pages that interest me specially. These other page numbers convey nothing unless I had the book before me."
"The first bunch of numbers was in your handwriting, then; but underneath were these others, in Weintraub's—or at any rate in his ink. When I saw that he was jotting down what I took to be code stuff in the backs of your books I naturally assumed you and he were working together——"
"And you found the cover in his drug store?"
"Yes."
Roger scowled. "I don't make it out," he said. "Well, there's nothing we can do till we get there. Do you want to look at the paper? There's the text of Wilson's speech to Congress this morning."
Aubrey shook his head dismally, and leaned his hot forehead against the pane. Neither of them spoke again until they reached Manhattan Transfer, where they changed for the Hudson Terminal.
It was seven o'clock when they hurried out of the subway terminus at Atlantic Avenue. It was a
