Cell Theory Historic Timeline

Events

Hans and Sacharias Janssen create microscope

1590

Robert Hooke coins the term "Cells" for the building blocks of life

1665

Anton Van Leeuwenhoek discovers single celled organisms

1674

Matthias Schleiden writes the book "Contributions to Phytogenesis" in which he says that all plants are made of cells

1838

Theodore Schwann states that animals as well as plants are made of cells

1839

Robert Virchow solidifies that cells are divisions of pre-existing cells

1858