rly propor- the sample of ore used is obtained. The ore before being assayed is carefully sampled, sa ton is then pounded into a roughly rectangular shape, tion his charge from the appearance of the ore alone. and is ready for cupellation. as to represent an exact average, as nearly as possible, A… … in. in height, 244 in. in width and 3 in. 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 hammer used. thus obtained which is given to the assayer. and piston being used to drive the material down…
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