Oliver, my professor, was a scientific bounder, a journalist by instinct, a thief of ideas,--he was always prying! And you know the knavish system of the scientific world. I simply would not publish, and let him share my credit. I went on working, I got nearer and nearer making my formula into an experiment, a reality. I told no living soul, because I meant to flash my work upon the world with crushing effect and become famous at a blow. I took up the question of pigments to fill up certain gaps. And suddenly, not by design but by accident, I made a discovery in physiology.