A text-book of assaying : $b for the use of those connected with mines.

"A Text-Book of Assaying: For the Use of Those Connected with Mines" by C. and J. J. Beringer is a scientific publication written in the early 20th century." The book serves as a comprehensive guide for assayers, detailing the methods and principles of assaying valuable minerals and ores. It aims to provide practical and systematic approaches to quantifying the constituents that affect the commercial value of mining materials. "At the start of the text, the authors emphasize the importance of accurate sampling and the principles governing the assaying process." They explain the role of the assayer in determining the value of various materials, outlining the distinction between sampling and assaying itself. The opening discusses key concepts involved in effective sampling, such as ensuring the sample is representative of the bulk material, and it introduces the systematic approach required for accurate results. Techniques for handling different types of samples (solid, liquid, gas) and the necessary calculations for determining moisture content are also outlined, setting the foundation for the detailed discussions that follow on specific assay methods.