### Abraham Gesner

Apr 29 Abraham Gesner, Canadian geologist (inventor of kerosene), dies at 66

**Apr 29**Charles-Julien Brianchon, French mathematician (Brianchon's theorem), dies at 80

Apr 29 Abraham Gesner, Canadian geologist (inventor of kerosene), dies at 66

**Apr 29**Charles-Julien Brianchon, French mathematician (Brianchon's theorem), dies at 80