Leave them with me for a few days, and I will make you an exact translation." "Very well," Burton assented.
"And one bean ?" the professor begged.

"Leave me one bean only?
I promise not to eat it, not to dissect it, not to subject it to experiments of any sort.

Let me just have it to look at, to be sure that what you have told me is not an hallucination." Burton shook his head.
"I dare not part with one.

I am going straight back to test the leaf theory.

If it is correct, I will keep my promise.