Publisher's Synopsis
Excerpt from The Practical Assayer: Containing Easy Methods for the Assay of the Principal Metals and Alloys, Principally Designed for Explorers and Those Interested in Mines
My object in writing this book has been tor provide a want I long felt myself - that is, a concise and clear account of the best and quickest way of assaying the principal metals. I think most works on this subject mix up the province of the analytical chemist too much with that of the assayer, whereas the two are totally distinct. Analytical chemistry presupposes, as a primary condition, that the operator should be a chemist; whereas assaying is a mere mechanical art, depending almost entirely on manipulation; so that the very first chemist of the day might easily be far inferior to a good assayer in estimating the exact value of an ore. Indeed, some of the very best and quickest assayers I ever knew have been Chileno and Mexican youths, who could hardly write their own names; and yet their manipulation and knowledge of mixtures, from constant practice, was perfect.
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