Aphronitre

Aphronitre, or aphronitrum, is a kind of nitre, mentioned in ancient texts. It was supposed to be the foam or froth of a liquid, emerging to the top. Naturalists have taken the ancient aphronitre to have been a native saltpetre.

•  This article incorporates text from a publication now in the public domain: Chambers, Ephraim, ed (1728). "Aphronitre". Cyclopædia, or an Universal Dictionary of Arts and Sciences (first ed.). James and John Knapton, et al. 
• digicoll.library.wisc.edu

• Potassium nitrate

0.00 (0 votes) Original source: https://en.wikipedia.org/wiki/Aphronitre. Read more