176. The false bottoms, of perforated wood, and the chlorinating vats, should be burned when no longer required, as they contain a considerable quantity of gold. At my works at Melrose the ashes of the four false bottoms yielded about $90 worth of gold and silver. The vats were assayed by boring a hole in one, burning the chips and smelting the ashes, which gave only $6 per tub, and, as they were still serviceable, it would not have been profitable to burn them. I attribute the fact of the vats having absorbed so much less gold than the false bottoms, to the circumstance that they had previously been used in the Hunt, Douglass, and Stewart copper silver process, and were quite saturated with brine, etc., while the false bottoms were of new lumber. Both were tarred.