I went and stood over the chairs. Then I moved them apart and walked over to my hostess.

"Good-bye," I said; "I'm afraid I must go now."

"Coward!" said somebody, who knew me rather better than the others.

"It's much easier than you think," said Bob.

"I don't think it's easy at all," I protested. "I think it's impossible."

I went back and stood over the chairs again. For some time I waited there in deep thought. Then I bent my knees preparatory to the spring, straightened them up, and said,

"What happens if you just miss it?"

"I suppose you bark your shins a bit."

"Yes, that's what I thought."

I bent my knees again, worked my arms up and down, and then stopped suddenly and said: