"I told my customer that I had invented a hair tonic that if its use were persisted in would certainly cause the hair to grow on the smoothest head. I sat down and wrote him out a formula and told him to have it prepared at a drug store and not to give away the information, as I intended after a while to have it patented and sell it on a large scale. The recipe contained a lot of harmless stuff, some salts of tartar, oil of almonds, bay rum, rose water, tincture of myrrh and some other ingredients. I wrote them down at random just as they came into my head, and half an hour afterwards I couldn't have told what it was composed of myself. The man took it, paid me a dollar for the formula and went off to get it filled at a drug store. "He came back twice that week to get shaved, and he said he was using it faithfully. Then he didn't come any more for about two weeks. He dropped in one afternoon and hung his hat up, and it nearly knocked me down when I saw that the finest kind of a suit of hair had started on his head. It was growing splendidly, and only two weeks before his head had been as bald as a door knob. "He said he was awfully pleased with my tonic, and well he might be. While I was shaving him I tried to think what the ingredients were that I had written down for him to use, but I couldn't remember the quantities or half the things I had used. I knew that I had accidentally struck upon a tonic that would make the hair grow, and I knew furthermore that that formula was worth a million dollars to any man if it would do the work. Making hair grow on bald heads, if it could be done, would be better than any gold mine ever worked. I made up my mind to have that formula. When he was about to start away I said carelessly: "'By the way, Mr. Plunket, I have mislaid my memorandum book that has the formula of my tonic in it and I want to have a bottle or two prepared this morning. If you have the one I gave you I'd like to make a copy of it while you are here.' "I must have looked too anxious, for he looked at me for a few minutes and then broke out into a laugh. "'By Jiminy,' he said, 'I don't believe you've got a copy of it anywheres. I believe you just happend to hit on the right thing and you don't remember what it was. I ain't half as green as I look. That hair grower is worth a fortune, and a big one, too. I think I'll just keep my recipe and get somebody to put the stuff up and sell it.' "He started out, and I called him into the back room and talked to him half an hour. "I finally made a trade with him and bought the formula back for $250 cash. I went up to the bank and got the money which I had there saving up to build a house. He then gave me back the recipe I had given him and signed a paper relinquishing all rights to it. He also agreed to sign a testimonial about the stuff having made his hair grow out in two weeks."