He was a thorn in the side of Mr. Purfleet, the usher who was generally in charge of the playground; who had learned by long experience that, whenever Bob Repton was quiet, he was certain to be planning some special piece of mischief. The usher was sitting now on a bench, with a book in his hand; but his attention was, at present, directed to a group of four boys who had drawn together in a corner of the playground.

"There is Repton, again," he said to himself. "I wonder what he is plotting, now. That boy will be the death of me. I am quite sure it was he who put that eel in my bed, last week; though of course, I could not prove it."

Mr. Purfleet prided himself on his nerve. He had been telling the boys some stories he had read of snakes, in India; among them, one of an officer who, when seated at table, had felt a snake winding itself round his leg, and who sat for several minutes without moving, until some friends brought a saucer of milk and placed it near, when the snake uncurled itself and went to drink.

"It must have required a lot of nerve, Mr. Purfleet," Bob Repton had said, "to sit as quiet as that."

"Not at all, not at all," the usher replied, confidently. "It was the natural thing to do. A man should always be calm, in case of sudden danger, Bob. The first thought in his mind should be, 'What is this?' the second, 'What had best be done, under the circumstances?' and, these two things being decided, a man of courage will deal coolly with the danger. I should despise myself, if I were to act otherwise."

It was two nights later that the usher, having walked down between the two rows of beds in the dormitory, and seeing that all the boys were quiet, and apparently asleep, proceeded to his own bed, which was at the end of the room, and partly screened off from the rest by a curtain. No sooner did he disappear behind this than half a dozen heads were raised. An oil lamp burned at the end of the room, affording light for the usher to undress; and enabling him, as he lay in bed, to command a general, if somewhat faint view of the dormitory. Five minutes after Mr. Purfleet had disappeared behind the curtain, the watching eyes saw the clothes at the end of the bed pulled down, and caught a partial view of Mr. Purfleet as he climbed in. A second later there was a yell of terror, and the usher leapt from the bed. Instantly, the dormitory was in an uproar.

"What is it, Mr. Purfleet--what is the matter, sir?" and several of the boys sprang from their beds, and ran towards him; the only exceptions to the general excitement being the four or five who were in the secret. These lay shaking with suppressed laughter, with the bedclothes or the corner of a pillow thrust into their mouths, to prevent them from breaking out into screams of delight.

"What is it, sir?"

It was some time before the usher could recover himself sufficiently to explain.

"There is a snake in my bed," he said.