1651 in science

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The year 1651 in science and technology involved some significant events.

Anatomy

• Jean Pecquet publishes Experimenta nova anatomica which includes his findings on the lymphatic system.
• William Harvey describes organ formation in the developing embryo in De Generatione.

Astronomy

• William Gilbert's A New Philosophy of Our Sublunar World is published posthumously. It theorises that the fixed stars are not all the same distance from Earth, and that the force of magnetism holds the planets in orbit around the Sun.
• Italian astronomer Giovanni Battista Riccioli's Almagestum Novum includes a map of the Moon giving definitive names to many features.

Chemistry

• German scientist Johann Glauber publishes Opera omnia chymica (Complete Works of Chemistry), a description of different techniques in chemistry.

Medicine

• Nicholas Culpeper publishes his medical astrology treatise, Semiotica uranica, or, An Astrological Judgement of Diseases from the Decumbiture of the Sick.
• Jean Pecquet publishes Experimenta Nova Anatomica in Paris, including his discovery of the Cisterna chyli.

Births

• April 10 - Ehrenfried Walter von Tschirnhaus, German mathematician (d. 1708)
• August - William Dampier, English explorer and hydrographic surveyor who circumnavigated the world three times (d. 1715)

Deaths

• September - Arthur Dee, English physician and alchemist (b. 1579)
• September 24 - Étienne Pascal, French mathematician (b. 1588)