Lazzaro spallanzani: A blow against spontaneous generation

Summary Spallanzani might be considered the founder of modern biology. His great success is mainly due to his incomparable ability in observing things and to the methods he utilised. His investigations into the development of microscopic life in nutrient culture solutions may be considered as decisive steps to counteract the leading theory of spontaneous generation and paved the way for the research work of Louis Pasteur.