1685 in science

Medicine

• Charles Allen publishes the first book in English on dentistry, .
• Govert Bidloo publishes an atlas of human anatomy, Ontleding des menschelyken lichaams, with plates by Gerard de Lairesse.

  Technology

• Menno van Coehoorn publishes his principal treatise on fortification, Nieuwe Vestingbouw op een natte of lage horisont, in Leeuwarden.

  Births

• August 18 – Brook Taylor, English mathematician
• November 17 – Pierre Gaultier de Varennes et de la Vérendrye, French Canadian explorer

  Deaths

• November 23 – Bernard de Gomme, military engineer in England
• December 12 – John Pell, English mathematician