| Date | 1877 |
| Author | Schloesing |
| Contribution | With Muntz, demonstrated that nitrate in soil was produced by "nitrifying" micro-organisms. |
| Reference | Doetsch |
| Notes | They did not isolate the organisms. See 1873, 1890. |
| Category | Miscellany |
| Pathogen Class | Bacteria |
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