"I have the proof!"

"Then you've got to show it. I demand it. I have the right to demand it."

"Two weeks from now, there will be sold at the Amhurst Auction Galleries, an autograph letter of General Arnold, in which he speaks of General DePuyster as an accomplice, who was ready to turn over to the British cause his honor and his sword. The catalogue will be issued in two weeks' time, and the full text of the letter printed. It might be well for your precious family that this letter remains unpublished!"

"I'll look it up at once," said DePuyster. "Until you prove your statement, I'll not notice or speak to you, Sir."

A week later an old autograph letter was shown to him at the cataloguing rooms of the auction-house. DePuyster had called every day, but it was a week before he was allowed to see it. It was to be sold as the "property of a gentleman."

With trembling hands, he examined this tomb of the secrets of the illustrious DePuyster, this time-stained document with faded writing. The letter read as follows:

Robinson's House,
September 2, 1780.

Sir:—

Everything is progressing as agreed. I have secured a pass for Hett Smith. I suppose the ordnance at West Point is the same as given. What of the military force? We have not enough to help us on this side. We need more than two, a third or fourth person is required. Colonel DePuyster, in charge of the ordnance, has given me his word that he will be ready when called upon. He has already written me, giving the number of blackberries in the first field. He is of great assistance, and his name, which has always stood for honor in America, will prove a great asset to us. It is a name that is like Cæsar's wife, and has never been suspected. I have supplied the third help-mate; will you furnish our fourth?

I am, Sir, with great respect,