"Didn't he go down and see the fire when Mr. Hick's workroom got burnt?" asked Daisy. Miss Miggle shook her head.

"He went out for his usual walk that evening," she

said. "About six o'clock. But he came back before the the fire was discovered."

The children looked at one another. So Mr. Smellie had gone out that evening - could he possibly have slipped down to Mr. Hick's, started the fire and come back again?

"Did you see the fire?" asked the housekeeper, with interest. But the children had no time to answer, for Mr. Smellie came out to see what they were doing. They went with him into his study - a most untidy room, strewn with all kinds of papers, its walls lined with books that reached right up to the ceiling.

"Gracious!" said Daisy, looking round. "Doesn't any one ever tidy this room? You can hardly walk without stepping on papers!"

"Miss Higgle is forbidden to tidy this room," said Mr. Smellie, putting his glasses on firmly. They had a habit of slipping down his nose, which was rather small. "Now let me show you these old, old books - written on rolls of paper - in the year, let me see now, in the year ... er, er ... I must look it up again. I knew it quite well, but that fellow Hick always contradicts me, and he muddles my mind so that I can't remember."

"I expect your quarrel a day or two ago really upset you," said Daisy, most sympathetically. Mr. Smellie took off his glasses, polished them and put them back on his nose again.

"Yes," he said, "yes. I don't like quarrels. Hick is a most intelligent fellow, but he gets very angry if I don't always agree with him. Now this document..."

The children listened patiently, not understanding a word of all the long speech that Mr. Smellie was making.