I have found then and at other times that in such moments, though the mind be occupied entirely by one overwhelming thought, yet the eyes take in, as it were unwittingly, all that lies before them, so that we can afterwards recall a face or landscape of which at the time we took no note. Thus it was with me that night, for though I was thinking of nothing but the jewel, yet I noted everything that could be seen through the window, and the recollection was of use to me later on. The window was made in the French style, reaching down to the floor, and opening like a door with two leaves. It led on to a little balcony, and now stood open (for the day was still very hot), and on the wall below was trained a pear-tree, which half-embowered the balcony with its green leaves. The window could be well protected in case of need, having latticed wooden blinds inside, and heavy shutters shod with iron on the outer wall, and there were besides strong bolts and sockets from which ran certain wires whose use I did not know. Below the balcony was a square garden-plot, shut in with a brick wall, and kept very neat and trim. There were hollyhocks round the walls, and many-coloured poppies, with many other shrubs and flowers. My eyes fell on one especially, a tall red-blossomed rushy kind of flower, that I had never seen before; and that seemed indeed to be something out of the common, for it stood in the middle of a little earth-plot, and had the whole bed nearly to itself. I was looking at this flower, not thinking of it, but wondering all the while whether Mr. Aldobrand would say the diamond was worth ten thousand pounds, or fifty, or a hundred thousand, when I heard him speaking, and turned round quick. 'My sons, and you especially, son John,' he said, and turned to me: 'this stone that you have brought me is no stone at all, but glass--or rather paste, for so we call it. Not but what it is good paste, and perhaps the best that I have seen, and so I had to try it to make sure. But against high chymic tests no sham can stand; and first it is too light in weight, and second, when rubbed on this Basanus or Black-stone, traces no line of white, as any diamond must. But, third and last, I have tried it with the hermeneutic proof, and dipped it in this most costly lembic; and the liquor remains pure green and clear, not turbid orange, as a diamond leaves it.'