MEYER, Frederich. Essais de Chymie, sur la chaux vive, la matière élastique et électrique, le feu, et l'acide universel primitif. 1766.

First edition of the french translation by Dreux.


"It is through lime that the Author discovered this general principle innate in all bodies, & which is its true elementary principle, this principle which constitutes fatty acid or acidum pingue substance known to the ancient chymists, [. ..] which defines it as a singular being & composed of a particular acid & of the matter of fire, & from which, according to him, all other acids derive. This acid must be called primitive acid. " (extract from the warning).

Curious theory of pingue acid, primitive principle which was to combine by transmitting the character of causticity to various compounds.