On August 25:
1609 Galileo Gallei demonstrated his first telescope to Venetian lawmakers.
Portrait of Galileo Galilei by Giusto Sustermans
1724 English painter George Stubbs was born.
A self portrait by George Stubbs
1768 Captain James Cook began his first voyage.
James Cook, portrait by Nathaniel Dance, c. 1775, National Maritime Museum, Greenwich.
1825 Uruguay declared its independence from Brazil.
1949 English writer Martin Amis was born.
1958 a tornado killed three people and injured more than 80 when it struck Frankton.
1961 US singer and actor Billy Ray Cyrus was born.
1991 Belarus declared its independence from the Soviet Union.
Sourced from NZ History Online and Wikipedia.