Left by himself, Mat looked about for better standing-room than he then happened to occupy; and seeing a vacant space left between the door-post and Mr. Blyth’s bureau, retreated to it. Putting his hands in his pockets, he leaned comfortably against the wall, and began to examine the room and everything in it at his leisure. It was not long, however, before he was disturbed. One of his neighbors, seeing that his back was against a large paper sketch nailed on the wall behind him, told him bluntly that he was doing mischief there, and made him change his position. He moved accordingly to the door-post; but even here he was not left in repose. A fresh relay of visitors arrived, and obliged him to make way for them to pass into the room--which he did by politely rolling himself round the door-post into the passage. As he disappeared in this way, Mr. Blyth bustled up to the place where Mat had been standing, and received his guests there, with great cordiality, but also with some appearance of flurry and perplexity of mind. The fact was, that Lady Brambledown had just remembered that she had not examined Valentine’s works yet, through one of those artistic tubes which effectively concentrate the rays of light on a picture, when applied to the eye. Knowing, by former experience, that the studio was furnished with one of these little instruments, her ladyship now intimated her ardent desire to use it instantly on “Columbus.” Valentine promised to get it, with his usual ready politeness; but he had not the slightest idea where it actually was, for all that. Among the litter of small things that had been cleared out of the way, when the painting-room was put in order, there were several which he vaguely remembered having huddled together for safety in the bottom of his bureau. The tube might possibly have been among them; so in this place he determined to look for it--being quite ignorant, if the search turned out unsuccessful, where he ought to look next. After begging the new visitors to walk in, he opened the bureau, which was large and old-fashioned, with a little bright key hanging by a chain that he unhooked from his watch-guard; and began searching inside amid infinite confusion--all his attention concentrated in the effort to discover the lost tube. It was not to be found in the bottom of the bureau. He next looked, after a little preliminary hesitation, into a long narrow drawer opening beneath some pigeon-hole recesses at the back.