Heriot-Watt's time as the Watt Institution marked a transitional period for the organisation, as its curriculum broadened to include several subjects beyond mathematics and the physical sciences. While the School of Arts had catered almost exclusively to working-class artisans and technical workers, the Watt Institution admitted a large number of middle-class students, whom it attracted with new subjects in the sciences, social sciences and humanities. By 1885, the skilled working class were no longer the majority in an institution that had been created explicitly for them.[1]: 133–135