The Effect of the Products of Combustion on the Shrinkage of Metal in the Brass Industry by C. Upthegrove and A. J. Herzic is a comprehensive research bulletin examining the impact of combustion products on the metallurgical processes in the brass industry. Conducted under the auspices of the University of Michigan and sponsored by The Utilities Research Commission, this 1931 study dissects the mechanisms of metal shrinkage due to various furnace atmospheres—reducing, neutral, and oxidizing—and explores how elements like temperature, composition of the alloy, and the use of fluxing agents can influence this phenomenon. Through detailed laboratory experiments and resourceful analysis of furnace atmospheres, the book presents critical findings applicable to both small and large-scale brass-melting operations. It underscores that while all furnace atmospheres resulting from the combustion of different fuels affect shrinkage, the optimal conditions to minimize it vary with the alloy composition and temperature. Moreover, the research highlights the practical applications of these findings in minimizing metal losses, which is significant for the brass industry given the high cost of non-ferrous metals compared to ferrous ones. The book aims to help professionals and researchers to enhance efficiency and reduce material wastage in brass production.