Patterson, Elizabeth Chambers. Mary Somerville and the Cultivation of Science, 1815-1840. Martinus Nijhoff, 1983.
19, 21-4
Timeline
1825: Michel-Eugène Chevreul and Joseph-Louis Gay-Lussac...
National or international item
1825
Michel-Eugène Chevreul
and Joseph-Louis Gay-Lussac
patented a way of making candles from fatty acid; this improvement on tallow candles was widely celebrated.
Hellemans, Alexander, and Bryan Bunch. The Timetables of Science: A Chronology of the Most Important People and Events in the History of Science. Simon and Shuster, 1988.