oct 17, 1674 - 1674 anton van leeuwenhoek
Description:
In 1674 he likely observed protozoa for the first time and several years later bacteria. Those “very little animalcules” he was able to isolate from different sources, such as rainwater, pond and well water, and the human mouth and intestine. He also calculated their sizes.
Added to timeline:
cell history timeline
Date:
