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 saw, his wonder rose to the point of a passion. He went about his business listless and distraught, thinking only of the time when he should be able to return to his watching. And then a few weeks after his first sight of the valley came the two customers, the stress and excitement of their offer, and the narrow escape of the crystal from sale, as I have already told.

Now, while the thing was Mr Cave's secret, it remained a mere wonder, a thing to creep to covertly and peep at, as a child might peep upon a forbidden garden. But Mr Wace has, for a young scientific investigator, a particularly lucid and consecutive habit of mind. Directly the crystal and its story came to him, and he had satisfied himself, by seeing the phosphorescence with his own eyes, that there really was a certain evidence for Mr Cave's statements, he proceeded to develop the matter systematically. Mr Cave was only too eager to come and feast his eyes on this wonderland he saw, and he came every night from half-past eight until half-past ten, and sometimes, in Mr Wace's absence, during the day. On Sunday afternoons, also, he came. From the outset Mr Wace made copious notes, and it was due to his scientific method that the relation between the direction from which the initiating ray entered the crystal and the orientation of the picture were proved. And, by covering the crystal in a box perforated only with a small aperture to admit the exciting ray, and by substituting black holland for his buff blinds, he greatly improved the conditions of the observations; so that in a little while they were able to survey the valley in any direction they desired.

So having cleared the way, we may give a brief account of this visionary world within the crystal. The things were in all cases seen by Mr Cave, and the method of working was invariably for him to watch the crystal and report what he saw, while Mr Wace (who as a