Births on July 30

Regnier de Graaf

Born on July 30, 1641

Regnier de Graaf, Dutch physician and anatomist (d. 1673)

Regnier de Graaf (English spelling), original Dutch spelling Reinier de Graaf, or Latinized Reijnerus de Graeff (30 July 1641 – 17 August 1673) was a Dutch physician, physiologist and anatomist who made key discoveries in reproductive biology. He specialized in iatrochemistry and iatrogenesis, and was the first to develop a syringe to inject dye into human reproductive organs so that he could understand their structure and function.

References

Regnier de Graaf

Choose Another Date

Events on 1641

11 Mar

Battle of Mbororé
Guaraní forces living in the Jesuit reductions defeat bandeirantes loyal to the Portuguese Empire at the Battle of Mbororé in present-day Panambí, Argentina.
23 Oct

Irish Rebellion of 1641
Irish Catholic gentry from Ulster tried to seize control of Dublin Castle, the seat of English rule in Ireland, to force concessions to Catholics.
24 Oct

Irish Rebellion of 1641
Sir Felim O'Neill of Kinard the leader of the Irish Rebellion issues his Proclamation of Dungannon justifying the uprising and declaring continued loyalty to Charles I