However no real progress was made in the scientific study of algae until the invention of the microscope — in about 1600. It was Anton van Leeuwenhoek (1632–1723) who discovered bacteria and saw the cell structure of plants. His unsystematic glimpses of plant structure, reported to the Royal Society between 1678 and his death in 1723, produced no significant advances (Morton, 1981 p. 180).[1]