Cell Discovery

All things are composed of minute, indestructible, invisible particles of pure matter.

Reported that glass globules filled with water aided in seeing those things difficult to see with the eye.

Investigated magnification by means of curved surfaces.

Stressed the importance of using lenses for the study of small objects.

Combined the two convex lenses within a tube, thus constructing the forerunner of the compound microscope.

Described microscopic structure of familiar substances including the cellular structure of cork.

Disproved the phenomenon of spontaneous generation.

Improved the polishing of lenses of short focal length to improve magnification and discovered bacteria.

Proposed that all organs in animal embryos were made of globules which could be seen under a microscope.

Described the nucleolus after finding it in the slime from an eel's skin.