Sal Prunelle, purified nitre in mass, or fused and rolled into small balls. See NITRE.
Sal Prunelle
Chambers's Encyclopaedia, Volume 9: Bound to Swansea, p. 119
Source scan(s): p. 0130
Sal Prunelle, purified nitre in mass, or fused and rolled into small balls. See NITRE.