Read it through once

“Let us be reasonable,” said the spy, “and let us be fair. To show you how mistaken you are, and what an unfounded assumption yours is, I will lay before you a certificate of Cly’s burial, which I happened to have carried in my pocket-book,” with a hurried hand he produced and opened it, “ever since. There it is. Oh, look at it, look at it! You may take it in your hand; it’s no forgery.”