Essays biographical and chemical
1908
I. Historical essays: The early days of chemistry.- The great London chemists: I. Boyle and Cavendish. II. Davy and Graham.- Joseph Black: his life and works.- Lord Kelvin.- Pierre Eugène Marcellin Berthelot. II. Chemical essays: How discoveries are made.- The Becquerel rays.- What is an element?- On the periodic arrangement of the elements.- Radium and its products.- What is electricity?- The aurora borealis.- The functions of a university. Oration delivered at University College, London, June 6, 1901
