1550 in science
# 1550 in science

## Medicine

* approx. date – Establishment of St Thomas's Hospital Medical School in London.

## Technology

* Commencement of laying out of gardens at the Villa d'Este, Tivoli, Italy, for Cardinal Ippolito II d'Este with sophisticated hydraulic features designed by Tommaso Chiruchi with Claude Venard.

## Publications

* Gerolamo Cardano publishes his comprehensive survey of the natural sciences, De subtilitate, in Nuremberg.
* Giovanni Battista Ramusio begins publication of Navigationi et Viaggi ("Navigations and Travels"), a collection of explorers' first-hand accounts of their travels, the first work of its kind.

## Births

* September 30 – Michael Maestlin, German astronomer and mathematician (died 1631)
* John Napier, Scottish mathematician (died 1617)
* Anselmus de Boodt, Flemish mineralogist and physician (died 1632)
* Jacques Guillemeau, French surgeon (died 1613)
* Ferrante Imperato, Neapolitan natural historian (died 1625)
* approximate date
   * Willem Barentsz, Dutch explorer (died 1597)
   * Marin le Bourgeoys, French inventor and artist (died c.1634)

## Deaths

* Sulaiman Al Mahri, Arab navigator (born 1480 AD)
