ppl. a. (UN-1 8 a b.)
1825. J. Nicholson, Operat. Mechanic, 768. About as much [gold] as was reserved unsulphurated from the mass.
ppl. a. (UN-1 8 a b.)
1825. J. Nicholson, Operat. Mechanic, 768. About as much [gold] as was reserved unsulphurated from the mass.
