Microscopically small and usually just a single cell, protists
are complex, varied organisms that represent more than 30
different phyla (the bulk of eukaryotic diversity on Earth).
Some are photosynthetic, some are important pathogens, and their
modes of locomotion vary. These glass models allow the naked eye
to see the complex protists. Herman O. Mueller, a Museum
preparator whose family had worked as glass blowers in Germany
for generations, spent 40 years working on the models. He
completed them in 1943. Hall of Biodiversity