title: 1550 in science
text: # 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)
  