Dear colleagues: The Swiss clockmaker Jost Bürgi was a famous instrument maker, mathematician and astronomer. He discovered the logarithms before John Napier but published them later. He collaborated with Johannes Kepler. Perhaps of interest: Jost Bürgi and the Discovery of Logarithms | blog@CACM | Communications of the ACM Best wishes, Herbert Bruderer p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0.0cm; text-autospace: ideograph-numeric ideograph-other; font-size: 11.0pt; font-family: Calibri , sans-serif; mso-ligatures: standardcontextual; mso-fareast-language: EN-US; } a:link, span.MsoHyperlink { mso-style-priority: 99; color: rgb(5,99,193); text-decoration: underline; } span.EmailStyle17 { mso-style-type: personal-compose; font-family: Calibri , sans-serif; color: windowtext; } *.MsoChpDefault { mso-style-type: export-only; font-family: Calibri , sans-serif; mso-fareast-language: EN-US; } div.WordSection1 { page: WordSection1; }