ly propor- the sample of ore used is obtained. The ore before being assayed is carefully sampled, so ton is then pounded into a roughly rectangular shape, tion his charge from the appearance of the ore alone. and is ready for cupellation. A large number of assays can be kept going at once, as to… … THE ASSAYING OF GOLD AND SILVER OEES. bers designating the sample for assaying which tt is in. in height, 2J^ in. in width and % in. in depth. is next pounded in an iron mortar and the process con- tinued until it is very finely pulverized. A sample is They are made by hammering in a mould, a…
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