John Napier

died 400 years ago

4th April 1617

**John Napier** is best known for his invention of logarithms but other mathematical contributions include a mnemonic for formulas used in solving spherical triangles and two formulas known as Napier's analogies.

*Find out more at*:

http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Napier.html