It is known he got an instrument made by Simon Ploessl in 1832 .

What did he use before that ? A  magnifying glass or a simple compound microscope ?  -- made by whom ?

Later he was rewarded with an instrument made by Pistor and Schieck .  What do we know about this microscope ?

Which microscopes did he use when he returned to Prague ?

Where are these microscopes today ?

Ortwin Bock in Cape Town South Africa  [email protected]

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