Note 61 — EXCURSION III.
Reading edition
The tin and copper are in a state of mechanical mixture, although Dr. Boase has lately found amongst the heaps, a specimen of "Tin Pyrites," in which these metals are chemically combined.
Reading edition
The tin and copper are in a state of mechanical mixture, although Dr. Boase has lately found amongst the heaps, a specimen of "Tin Pyrites," in which these metals are chemically combined.