Note 173 — Chapter VIII · (continued 2)

It must be borne in mind that there was no error in this experiment, and that it was never suggested that the arsenic in this case came from the copper, as it was not destroyed, as when the bottle of chlorate of potash was afterwards tested with copper gauze, which was destroyed by it, and the arsenic in the gauze liberated. Serjeant Parry, of course, said that the experiments in both cases were the same. So they were so far as copper was used, but the presence of the chlorate of potash in the other case made all the difference.—See Chapter IX.