| On Conducting (Üeber Das Dirigiren) : A Treatise on Style in the Execution of Classical Music
Richard Wagner | |
| On criminal abortion in America
Horatio Robinson Storer | |
| On Digestive Proteolysis / Being the Cartwright Lectures for 1894
R. H. Chittenden | |
| On dreams
Sigmund Freud | |
| On English Homophones / Society for Pure English, Tract 02
Robert Bridges | |
| On English poetry
Robert Graves | |
| On Everything
Hilaire Belloc | |
| On Foreign Service; Or, The Santa Cruz Revolution
T. T. Jeans | |
| On Germinal Selection as a Source of Definite Variation
August Weismann | |
| On Growth and Form
D'Arcy Wentworth Thompson |
