Theodore Tronchin (1709-1781) and his friend Louis de Jaucourt (1704-1779).

Tronchin's main importance lies in his contribution to personal hygiene, more than to pioneering research. He was an industrious promotor of the inoculations of smallpox against all opposition offered by conservative physicians politicians and theologists. As an inoculator he was most successful in France, the Netherlands and Switzerland. He always tried to suppress malpractice committed by his colleagues and never ran away from conflicts.