{"product_id":"2940169277500","title":"Text-book of Assaying","description":"This is a formal but relaxed text covering assaying techniques for most of the substances which are mined. As the authors say: \"At first our intention was to supply a description of those substances only which have a commercial value, but on consideration we have added short accounts of the rarer elements...\"\u003cbr\u003e\u003cbr\u003eThe book's early chapters are wide-ranging, describing the general theory of assaying and a range of methods and reagents, with the later chapters describing analytical methods for different groups of metals and for some non-metallic substances. It includes many excellent illustrations of the scientific method, demonstrating the effects of changing the parameters of many of the assay techniques.\u003cbr\u003e\u003cbr\u003eIt was first published in 1889; this edition in 1904.\u003cbr\u003e\u003cbr\u003e[The reader has omitted some mathematical examples, tables of data and descriptions of figures, where their inclusion would seem to over-complicate the text; and has attempted to describe many of the pieces of apparatus which are illustrated.] (Introduction by Peter Yearsley)","brand":"DISCOS PALMAS","offers":[{"title":"Default Title","offer_id":47179250172144,"sku":"2940169277500","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940169277500_p0.jpg?v=1772801064","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940169277500","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}