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]