| Date | 1838 |
| Author | Ehrenberg |
| Contribution | Published major illustrated treatise on "infusoria," including protozoa and bacteria. |
| Reference | Garrison |
| Notes | Grossly misconstrued the internal structures of the organisms, but gave valuable illustrations. Included a family, Vibrionia, which included the genera Bacterium, Vibrio and Spirochaeta. Used indigo and carmine stains, first tried by von Gleichen 1778. |
| Category | Miscellany |
| Pathogen Class | Bacteria |
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