“I really believe you are right,” said Klaus Heinrich sadly.

“The atmospheric pressure there is higher than I thought!”

“It is lower than you thought.”

“But how about the falling quicksilver?”

“The quicksilver falls at low pressure, not at high, Royal Highness.”

“Now I'm absolutely lost.”

“I think, Prince, that you're exaggerating your ignorance by way of a joke, so as to hide what its extent really is. But as the atmospheric pressure is so high that the quicksilver drops, thus showing an absolute disregard for the laws of nature, let's go for a ride, Countess—shall we? I cannot assume the responsibility of sending the Prince back home again now that he has once come. He can wait in there till we're ready….”

When Imma Spoelmann and the Countess came back to the winter garden they were dressed for riding, Imma in a close-fitting black habit with breast-pockets and a three-cornered felt hat, the Countess in black cloth with a man's starched shirt and high hat. They went together down the steps, through the mosaic hall, and out into the open air, where between the colonnade and the big basin two grooms were waiting with the horses. But they had not yet mounted when with a loud barking, which was the expression of his wild excitement, Percival, the collie, prancing and leaping about, tore out of the Schloss and began a frenzied dance round the horses, who tossed their heads uneasily….

“I thought so,” said Imma, patting her favourite Fatma's head, “there was no hiding it from him. He found it all out at the last moment. Now he intends to come with us and make a fine to-do about it too. Shall we drop the whole thing, Prince?”

But although Klaus Heinrich understood that he might just as well have allowed the groom to ride in front with the silver trumpet, so far as calling public attention to their expedition was concerned, yet he said cheerfully that Percival must come too; he was a member of the family and must learn the neighbourhood like the rest.