January 20th
1758 Marie Anne Paulze Lavoisier was born. She was a research assistant, collaborator, illustrator, editor, publisher, and spouse of Antoine Lavoisier. She was later the spouse (but not ollaborator) of Benjamin Thompson, Count Rumford.
1834 Adolph Frank, who made calcium cyanamide from calcium carbide and nitrogen, was born.
1862 George G. Henderson, researcher on catalysis, was born.