From the Revd Peter Mott
Sir, — I beg Paul Vallely to desist from his campaign to outlaw the teaching of phlogiston theory in schools (Comment, 23 September). My old chemistry master began by teaching us phlogiston theory, and then set about disproving it. The fact that I can remember it 50 years later shows what a brilliant teacher he was.
The Rectory, 13 Westview Grove
Keighley, West Yorkshire BD20 6JJ