Reviewed by: Early Railway Chemistry and Its Legacy by Colin A. Russell and John A. Hudson David Knight (bio) Early Railway Chemistry and Its Legacy. By Colin A. Russell and John A. Hudson. Cambridge, UK: Royal Society of Chemistry, 2012. Pp. xiv+208. $48 Chemists and chemistry do not strike most of us as immediately relevant to the development of railways, but these authors make a good case for revising that judgment. Colin Russell, who sadly has just died, and John Hudson are highly respected historians of chemical theory and practice, au fait with technical practices and the rise of the industrial chemist, with the history of technical education, and with the records of chemical societies both learned and professional. They bring this expertise to their investigation [End Page 978] of railways in Britain, vindicating their belief in the ubiquity of chemistry—a science often overlooked as unglamorous. Chemists could help with crucial questions about metals, for the tracks and the locomotives; appropriate lubricants; water and the avoidance of deposits in boilers; timber preservatives, as wooden sleepers became the norm; and with fuel, minimizing smoke, ash, and clinker. As the first railways grew into a system from the 1830s, chemists, including Michael Faraday and John Davy, were called upon as consultant analysts when needed for advice and troubleshooting. In 1864, the first laboratory to undertake analyses as a matter of control was set up, and the “railway chemist,” a salaried employee, was born. From their chemists at Crewe, York, Derby, and then at Swindon (the largest), the big railway companies expected advice on a steadily widening series of issues. Major innovations at that point were the coming of cheap steel produced by Henry Bessemer’s process for use in place of wrought iron for the rails, and of photography for recording broken rails and such things, but also new kinds of rolling stock, steel bridges, large new stations, and seaside destinations. The chemists analyzed fuel (for lamps, as well as engines), lubricants, water, preservatives, and paints, primarily for quality control, and were also concerned with checking air quality in tunnels, about which there was public anxiety. Chemists also advised about the transport of dangerous loads, such as explosives and petroleum. As railway towns mushroomed around companies’ headquarters and workshops and stations acquired refreshment rooms, railway chemists were involved in analyzing drinking water and became adept in bacteriological, as well as chemical examinations. Soon, like the engineers at the great workshops, the chemists became involved in research, as well as carrying out and improving routine analyses. Various recipes for lubricants had been worked out, using vegetable and animal oils and fats, but these proved unstable at high temperatures, and as superheating in locomotives came in, petroleum lubricants became more important. Work was also required on metals, where an outbreak of failures in copper fireboxes proved to be due to the extreme purity demanded of commercial copper in the 1880s by the novel electrical industry, making it too soft. This problem led to research in metallurgy and to the addition of arsenic to copper for locomotives. The different companies gradually established standards for materials and even for laboratories generally, introducing “normal” solutions of acids and alkalis. Railways got together to introduce an increasingly complicated taxonomy for freight, puzzling to outsiders; their chemists helped with that taxonomy and investigated claims (sometimes fraudulent) for cargo damaged in transit. By the last years of the nineteenth century, chemists were playing their part in railway research on broader issues; and although their different companies were competing on some routes, they were getting together regularly for discussions. This continued when Britain’s railways were “grouped” into [End Page 979] four in 1923, and then nationalized in 1948. The railway chemist was a recognized expert, a member of a small professional group. Although nowadays no chemists are directly employed on the railways, the authors end on an upbeat note about their continuing legacy. The book is accessible, based on primary sources published and archival, and fully annotated. It is aimed at chemists and assumes some familiarity with the science, but no special knowledge of its history. Nevertheless, it shines a light into a previously dark corner and will...