• English comparative anatomistEdward Tyson publishes Phocæna, or The anatomy of a porpess, dissected at Gresham Colledge, concluding that the porpoise is a mammal. • Robert Morison publishes Plantarum Historiae Universalis Oxoniensis, Pars Secunda, seu Herbarum Distributio Nova per Tabulas Cognationis et Affinitatis ex Libro Naturae observata et detecta, utilising his method of taxonomy. ==Chemistry==
Chemistry
• 30 September – Robert Boyle reports to the Royal Society of London his manufacture of phosphorus. He uses it to ignite sulfur-tipped wooden splints, forerunners of the match. ==Physics==
Physics
• 8 July – Robert Hooke observes the nodal patterns associated with the vibrations of glass plates. ==Births==