Whyte notation
The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in "American Engineer and Railroad Journal". The notation counts the number of leading wheels, then the number of driving wheels, and finally the number of trailing wheels, groups of numbers being separated by dashes. Other classification schemes, like UIC classification and the French, Turkish and Swiss systems for steam locomotives, count axles rather than wheels.
James A. Whyte
After his ordination in 1945 he spent three years as a chaplain to the first battalion of the Scots Guards, and then served as a parish minister at Dunollie Road Church in Oban (inducted 1948) and Mayfield North in Edinburgh (1954). In 1958 he was appointed Professor of Practical theology and Christian ethics at St Mary's College, the divinity faculty of the University of St Andrews and was Principal of St Mary's 1978-1982. His academic work focused mainly on the study of pastoral theology, liturgy and ecclesiastical architecture. He served as convenor of the General Assembly's Inter-Church Relations Committee. After his retirement from the University in 1987, he became Associate Minister of Hope Park, St Andrews. He was moderator of the 1988 General Assembly. In 1942 Whyte married his first wife Elisabeth Mill who died during his moderatorial year. He was survived by his second wife, primary school teacher Ishbel (née MacAuley) and the daughter and two sons of his first marriage.