"Well. That was the way I arranged the puzzle Monday evening, but, as I say, it was none of my business. It didn't become my business until the middle of Tuesday afternoon, when I accepted a commission from Mr. Osgood to solve the murder, having first demonstrated that there had been one. At that moment I expected to have the job completed within a few hours. Only two things needed to be done to verify the solution I had already arrived at: first, to question everyone who had been at Pratt's place Monday evening, for if it turned out that you could not have left the house secretly-for instance, if someone had been with you constantly-I would have to consider new complexities; and second, to establish the identity of the bull. The first was routine and I left it to Mr. Waddell, as his proper province, while I investigated Clyde's background by conversing with his father and sister. The second, the proof that the bull was not Caesar, I intended to procure, with Mr. Bennett's assistance, as soon as I heard from the district attorney, and that delay was idiotic. I should not have postponed it one instant. For less than 3 hours after I had accepted the case I learned from your own lips that the bull was dead and his carcass was to be immediately destroyed. I tried; I phoned Mr. Bennett and learned that there was no single distinguishing mark or brand on Guernsey bulls, and Mr. Goodwin rushed over to take photographs; but the bull was already half consumed by fire. You acted quickly there, and in time. Of course you gave him the anthrax yourself. It would be… perhaps you would tell me how and when you did it."
McMillan said nothing.
Wolfe shrugged. "Anyhow, you were prompt and energetic. As long as the bull was destined to be cooked and eaten-this was to be the day for that, by the way-you ran little risk of exposure. But when all thought of the barbecue was aban- doned, and it was suspected that Clyde had been murdered, the bull's presence, alive or dead, was a deadly peril to you. You acted at once. You not only killed him, you did it by a method which insured that his carcass would be immediately destroyed. You must have been prepared for contingencies.