“Carbon is, as may easily be shown and as I shall explain in greater detail later, tetrabasic or tetratomic, that is 1 atom of carbon = C = 12 is equivalent to 4 At.H.” MayGreaterDetailsAtomsCarbon Author:August Kekule
“We define organic chemistry as the chemistry of carbon compounds.” ScienceChemistryCarbonCompoundsNomenclatureOrganic Chemistry Author:August Kekule