legs.
âDanny,â he said in a dry voice.
Dannyâs face was red. âIâI was excited,â he stuttered. âGosh, who wouldnât be?â
Mr. Willoughby was shaking his head in a bewildered manner. âI still donât understand it,â he said.
Mrs. Dunn had jumped to her feet when the Professor fell to the floor. She came over to him now and asked anxiously, âAre you all right?â
âCertainly, just a bit shaken upâor down, as the case may be.â
He smiled, and began looking for his pipe.
Mr. Willoughby said, âProfessor Bullfinch, for goodness sake, please tell me what this is all about. I can hardly believe, even now, what I saw.â
He looked up. The Professorâs shoes were still clinging to the ceiling. The strange, glowing liquid could be plainly seen on their soles.
Dr. Grimes snapped his fingers. âIâve got it!â he cried. âStatic electricity! You gave it away yourself.â
âYes,â said the Professor seriously, âI believe youâre right. When I rubbed my feet on the carpet, I built up a charge of static electricity in my body. In some way this was enough to charge that liquid on my shoes.â
Dr. Grimes sneered, âRubbish! Have you got a deck of cards?â
âWhyâI believe so,â said Mrs. Dunn. âButââ
Dr. Grimes rubbed his hands together. âGive them to me at once, please.â
Mrs. Dunn glanced at Professor Bullfinch, and he nodded. She opened the drawer of the sideboard and got out a deck of playing cards.
Dr. Grimes snatched them. He took out one and, holding it, rubbed his feet on the carpet.
âThis is hardly the time,â Mr. Willoughby protested, âfor card tricks. Really, Dr. Grimes, I thinkââ
The grim-faced rocket expert was not listening. After he had rubbed his feet for a while on the carpet, he placed the card against the smooth surface of the living-room wall. It clung to the wall for a moment or two before fluttering to the floor.
âThere you are!â Dr. Grimes said triumphantly. âStatic electricity has made the card stick to the wall. The same thing is true for the shoes.â
Professor Bullfinch chuckled. Then, standing on the chair, he reached up. He took hold of one of the shoes and, with an obvious effort, forced it away from the ceiling. He carried it to a window. He looked very odd indeed, for the hand in which he held the shoe stuck straight up above his head, and he himself barely touched the floor as he walked.
âDanny,â he called. âOpen this window, please.â
Danny hurried to do as he was asked.
âNow then, the rest of you,â said the Professor. âQuickly, for I canât hold this shoe much longer. Mr. Willoughby, Dr. Grimesâyou open the other window and watch.â
âWatch what?â said Mr. Willoughby.
Dr. Grimes flung the window open and thrust his head outside. Mr. Willoughby and Mrs. Dunn crowded next to him. Danny, crouching at the sill of the first window, ducked his head so that the Professor could lean out.
Professor Bullfinch held the shoe out the window and opened his hand. It was as if he had released a balloon. The shoe rose swiftly in the evening air, catching the last rays of the sun on its surface, and then vanished from their sight.
For once Dr. Grimes had nothing to say. But Mr. Willoughby, in excitement, slammed down the windowâalmost catching Dr. Grimesâs head in itâand cried, âSpectacular! Amazing! My dear Professor, this is unbelievable!â
âIt is, isnât it?â said the Professor calmly.
âHow did you do it?â
âIâm not quite sure. This liquid appears to have strange properties.â The Professor began pacing up and down. âIâll have to do a number of experiments tomorrow in an attempt to find out just how it works.â He stopped and faced the others. âBut it