"Fossils are of four kinds, viz. saline, earthy, inflammable and metallic; hence arise four classes."

--

Source : William Withering, Torbern Bergman (1822). “The miscellaneous tracts of the late William Withering: to which is prefixed a memoir of his life, character, and writings”, p.15

Torbern Bergman

#Class Quotes #Fossils Quotes #Four Quotes