I heard a few words, and nodded at Wolfe. “Here’s Farrell now.” Wolfe pulled his phone over, and I kept my receiver to my ear. They talked only a minute or two.

After we had hung up, I said, “What what? Farrell taking Mr. Somebody to lunch at the Harvard Club? You’re spending money like a drunken sailor.”

Wolfe rubbed his nose. “I am not spending it. Mr. Farrell is. Decency will of course require me to furnish it. I requested Mr. Farrell to arrange for an interview with Mr. Oglethorpe; I did not contemplate feeding him. It is now beyond remedy. Mr. Oglethorpe is a member of the firm which publishes Mr. Chapin’s books, and Mr. Farrell is slightly acquainted with him.”

I grinned. “Well, you’re stuck. I suppose you want him to publish your essay on The Tyranny of the Wheel. How’s it coming on?”

Wolfe ignored my wit. He said, “Upstairs this morning I spent twenty minutes considering where Paul Chapin might elect to type something which he would not wish to be traced to him. The suggestion in one of Bascom’s reports, that Chapin has a duplicate set of type-bars for his machine which he substitutes on occasion, I regard as infantile. Not only would the changing of the bars be a difficult, laborious and uninspired proceeding; there is also the fact that the duplicate set would have to be concealed in some available spot, and that would be hazardous. No. Not that. Then there is the old trick of going to a typewriter agency and using one of their machines exposed for sale. But a visit from Paul Chapin, with his infirmity, would be remembered; also, that is excluded by the fact that all three of the warnings were executed on the same typewriter. I considered other possibilities, including some of those explored by Bascom, and one seemed to offer at least a faint promise. Mr. Chapin might call at the office of his publisher and, wishing to alter a manuscript, or even merely to write a letter, request the use of a typewriter. I am counting on Mr. Farrell to discover that; having discovered it, he may be able to get Mr. Oglethorpe’s permission to take a sample of the work of the machine that Chapin used — or if that is not known, of each machine in their office.”

I nodded. “That’s not very dumb. I’m surprised that Farrell can still pay his dues at the Harvard Club.”

“When a man of a certain type is forced into drastic financial retrenchment, he first deserts his family, then goes naked, and then gives up his club. Which reminds me, I gave Mr. Farrell twenty dollars this afternoon. Please record it. You may also note on your list those who have initialed the memorandum, and file the various copies. Also, note that we have an additional contributor, Miss Evelyn Hibbard. I arranged it with her this morning. The amount is three thousand dollars.” He sighed. “I made a large reduction from the ten thousand she offered Saturday on account of the altered circumstances.”

I had been waiting for that, or something like it. I made the Farrell entry in the cashbook, but didn’t get out the list. I felt like clearing my throat, but I knew that wouldn’t do, so I swallowed instead. I put the cashbook back and turned to Wolfe:

“You understand, sir, I wouldn’t accuse you of trying to put anything over. I know you just forgot about it.”

His eyes opened at me. “Archie. You are trying the cryptic approach again. To what this time?”