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THE MYSTERY OF THE YELLOW ROOM
it repeated to him three times. He also wanted to be sure that the forest-keeper knew that the professor and his daughter were going to dine in the laboratory, and how he had come to know it.
When Monsieur Darzac had finished, I said: "The examination has not advanced the problem much."
"It has put it back," said Monsieur Darzac.
"It has thrown light upon it," said Rouletabille, thoughtfully.
