 Some subjects were not taught at central institutions, for example teacher training was only carried out by colleges of education, which later merged with universities.Amongst the most common names for individual central institutions were "college of agriculture", "college of art", and "institute of technology".Of the five colleges of technology, Napier and Glasgow eventually changed their names to include the word "polytechnic", Paisley took the name "Paisley College", while Dundee and Robert Gordon became institutes of technology.