| Date | 1877 |
| Author | Tyndall |
| Contribution | Reported that bacteria must have a heat-resistant form. |
| Reference | Brock |
| Notes | Tyndall had read this paper to the Royal Society in the previous year (1876). The discovery that some bacteria have a heat-resistant form was of enormous importance to bacteriology. Tyndall was a strong supporter of the work of Koch. |
| Category | Miscellany |
| Pathogen Class | Bacteria |
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