Hole on the real one - Rijksmuseum Boerhaave - V07017
Do you see the little hole? That little hole is perhaps even more important than the pin we just saw.
Semen, blood, and bacteria – all things discovered by Van Leeuwenhoek’s microscopes for the first time, are all fluids, or they are observed in a fluid. If Van Leeuwenhoek looked at these substances in a small glass vile, he might have placed that vile in this small hole- a hole found next to the preparation slide pin in het screw block in all examples.
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