"And what kind of weather does that produce?" said the Warden. "Listen, children! Now you'll hear something worth knowing!"
"Horizontal weather," said the Professor, and made straight for the door, very nearly trampling on Bruno, who had only just time to get out of his way.
"Isn't he learned?" the Warden said, looking after him with admiring eyes. "Positively he runs over with learning!"
"But he needn't run over me!" said Bruno.
The Professor was back in a moment: he had changed his dressing-gown for a frock-coat, and had put on a pair of very strange-looking boots, the tops of which were open umbrellas. "I thought you'd like to see them," he said. "These are the boots for horizontal weather!"
"But what's the use of wearing umbrellas round one's knees?"
"In ordinary rain," the Professor admitted, "they would not be of much use. But if ever it rained horizontally, you know, they would be invaluable——simply invaluable!"
"Take the Professor to the breakfast-saloon, children," said the Warden. "And tell them
