In “Engineering Bulletin: Boiler and Furnace Testing,” Rufus T. Strohm presents a comprehensive examination of the methodologies employed in assessing boiler and furnace efficiencies. The text is characterized by its meticulous attention to detail and a systematic approach that marries theoretical principles with practical applications. Within the context of early 20th-century engineering practices, Strohm'Äôs work stands as a vital resource for understanding the evolution of thermal efficiency standards and the technological advancements that shaped industrial heating systems. His analytical style is both accessible and rigorous, aiming to demystify complex calculations and technical processes for practitioners and scholars alike. Rufus T. Strohm, a noted figure in mechanical engineering, was deeply influenced by the challenges of the industrial revolution that demanded efficient energy solutions. His extensive background in engineering and his role in various industrial projects informed his insights, prompting a need for standardized testing protocols in boiler and furnace design. Strohm's commitment to improving energy utilization and his advocacy for scientific inquiry have positioned this work as pivotal in its field. This book is highly recommended for engineers, industry professionals, and academics alike, offering a plethora of valuable information that bridges practical know-how with theoretical foundations. Whether you seek to enhance your understanding of boiler efficiency or delve into historical testing methodologies, Strohm's bulletin serves as an indispensable reference.