| Date | 1850 |
| Author | Rayer |
| Contribution | Reported elongated bodies (rods) in blood of sheep dead of anthrax. |
| Reference | Norman |
| Notes | P.F.O. Rayer. Disease (or rods?) were transmissible to other sheep by inoculation of blood. Worked with Davaine who later claimed to have written this report and sent it to Rayer for publication. See 1837. |
| Category | Causation |
| Pathogen Class | Bacteria |
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