Frederick Slare

Frederick Slare or Slear (1647?–1727) was an English physician and chemist, a follower of Robert Boyle and Thomas Sydenham.

Born in Old, Northamptonshire, Slare was the son of Frederick Schloer, the German rector there, and Anna, daughter of Ralph Malory of Shelton; Theodore Haak was a cousin of his father. After studying at the University of Heidelberg from 1666, he lodged with Haak for a time, and began work as a laboratory assistant to Robert Boyle. He was corresponding with Gottfried Leibniz, by 1673.

Introduced by Robert Hooke to the Royal Society on 3 July 1679 to show experiments on spermatozoa, then recently discovered by Leeuwenhoek, Slare was recommended for election by Haak. He was admitted Fellow on 16 December 1680, and became a member of the council on 30 November 1682. From early 1683 he and Edward Tyson acted as Curators of Experiments for the society, and Slare was very active in this role for about 18 months.

Slare graduated M.D. at the University of Utrecht in 1679; and was admitted M.D. at Oxford on 9 September 1680. He was a candidate of the Royal College of Physicians on 25 June 1681, and Fellow on 25 June 1685. He acted as censor in 1692, 1693, and 1708; elector on 21 September 1708; and was member of the council from 1716 till his death.

Slare had a large practice in London. In 1709 he organised support for German emigrants from the Palatinate, bringing together John Tribbeko, John Chamberlayne and others. He retired to the country before 1715.

Slare had religious interests, was a founder member of the Society for Promoting Christian Knowledge (SPCK) and Society for the Propagation of the Gospel in Foreign Parts, and was a friend of John Floyer. In 1714 and 1715 he made benefactions to two church livings. He was one of the Commissioners for Relieving poor Proselytes; the Society for Relieving Poor Proselytes, from 1717 to the end of the 1720s, directed funds mostly to immigrant converts from Catholicism, and was an initiative of Henry Newman of the SPCK.

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