We are swamped with information and each day seems to bring new discoveries that must be considered. Never before in the history of science have so many scientists been as active as today. It has become a major problem for the expert just to keep up with the literature in his or her own field of research. Why, then, should experts and their poor students worry about the pioneers of microbiology, those half-forgotten scientists who a century ago devoted their lives to a new science that was on its way to revolutionizing medicine?With so many new facts and problems screaming for our attention, i