Pyrometry: A Practical Treatise on the Measurement of High Temperatures is a book written by Charles R. Darling that deals in detail with methods of measuring high temperatures. In this book, the author reveals the essence of pyrometry, explains its use in scientific and industrial research. Charles R. Darling presents the reader with a broad overview of current methods of temperature measurement and shares his own experience in the field. The book "Pyrometry" will be a useful source of information for scientists, engineers and anyone interested in accurate temperature measurement.