Adrien Ulacq

Adrien Ulacq was a Flemish mathematician, best known for his logarithmic tables.
Life.
He was originally of Flemish ethnicity from Gouda, Holland.
Career.
In 1628, he modified the logarithmic tables of Briggs and added more details to them.
He filled up the gap in the numbers between 20,000 and 90,000 in the logarithmic tables.
The logarithmic tables produced by Ulacq proved to be extremely useful for land surveyors.
Honours.
His achievements in logarithms and mathematics have been noted by several authors and sources.
These include the "Lexicon Technicum".
It also includes Diderot's "Encyclopédie".