She seemed to be rather proud of it, and as I did not see my way just then to acquire any further information, I sank with a weary air into a chair, turning the conversation as I did so upon other and totally irrelevant topics. But no topic was of much interest to her, that did not in some way involve Mr. Barrows; and after a few minutes of desultory chat, she pleaded the excuse of business and hurriedly left the room. XVI. THE GREEN ENVELOPE. Sir, you shall understand what hath befall'n, Which, as I think, you know not. Here is a letter. --OTHELLO. Her departure was a relief to me. First, because I had heard so much, I wanted an opportunity of digesting it; and, secondly, because of my interest in the engraving she had shown me, and the impatience I felt to study it more closely. I took it up the moment she closed the door. It was the picture of a martyr, and had evidently been cut from some good-sized book. It represented a man clothed in a long white garment, standing with his back to the stake, and his hand held out to the flames, which were slowly consuming it. As a work of art, it was ordinary; as the illustration of some mighty fact, it was full of suggestion. I gazed at it for a long time, and then turned to the bookcase. Was the book from which it had been taken there? I eagerly hoped so. For, ignorant as I may seem to you, I did not know the picture or the incident it represented; and I was anxious to know both. For Mr. Barrows was not the man to disfigure a work of art by covering it with a coarse print like this unless he had a motive; and how could even a suspicion of that motive be mine, without a full knowledge of just what this picture implied? But though I looked from end to end of the various shelves before me, I did not succeed in finding the volume from which this engraving had been taken. Large books were there in plenty, but none of the exact size of the print I held in my hand. I own I was disappointed, and turned away from the bookcase at last with a feeling of having been baffled on the verge of some very interesting discovery. The theory advanced with so much assurance by Mrs. Simpson had not met with much credence on my part. I believed her facts, but not the conclusions she drew from them. Nothing she had related to me convinced me that Mr. Barrows was in any way insane; nor could I imagine for a moment that he could be so without the knowledge of Ada, if not of his associates and friends.