| Portrait of William Harvey | [Frontispiece] |
| Bramwell, John Milne | PAGE |
| [Hypnotism: Its History, Practice and Theory] | 1 |
| Buffon, Comte de |
| [Natural History] | 12 |
| Chambers, Robert |
| [Vestiges of Creation] | 22 |
| Cuvier, Georges |
| [The Surface of the Globe] | 33 |
| Darwin, Charles |
| [The Origin of Species] | 43 |
| Davy, Sir Humphry |
| [Elements of Chemical Philosophy] | 64 |
| Faraday, Michael |
| [Experimental Researches in Electricity] | 75 |
| [The Chemical History of a Candle] | 85 |
| Forel, Auguste |
| [The Senses of Insects] | 95 |
| Galileo |
| [Dialogues on the System of the World] | 105 |
| Galton, Sir Francis |
| [Essays in Eugenics] | 111 |
| Haeckel, Ernst |
| [The Evolution of Man] | 123 |
| Harvey, William |
| [On the Motion of the Heart and Blood] | 136 |
| Herschel, Sir John |
| [Outlines of Astronomy] | 146 |
| Humboldt, Alexander von |
| [Cosmos, a Sketch of the Universe] | 158 |
| Hutton, James |
| [The Theory of the Earth] | 170 |
| Lamarck |
| [Zoological Philosophy] | 179 |
| Lavater, Johann |
| [Physiogonomical Fragments] | 191 |
| Liebig, Justus von |
| [Animal Chemistry] | 203 |
| Lyell, Sir Charles |
| [The Principles of Geology] | 215 |
| Maxwell, James Clerk |
| [A Treatise on Electricity and Magnetism] | 227 |
| Metchnikoff, Elie |
| [The Nature of Man] | 238 |
| [The Prolongation of Life] | 246 |
| Miller, Hugh |
| [The Old Red Sandstone] | 255 |
| Newton, Sir Isaac |
| [Principia] | 267 |
| Owen, Sir Richard |
| [Anatomy of Vertebrates] | 280 |
| Virchow, Rudolf |
| [Cellular Pathology] | 292 |
A Complete Index of The World's Greatest Books will be found at the end of Volume XX.
Acknowledgment
Acknowledgment and thanks for the use of the following selections are herewith tendered to the Open Court Publishing Company, La Salle, Ill., for "Senses of Insects," by Auguste Forel; to G.P. Putnam's Sons, New York, for "Prolongation of Human Life" and "Nature of Man," by Elie Metchnikoff; and to the De La More Press, London, for "Hypnotism, &c.," by Dr. Bramwell.
Science
JOHN MILNE BRAMWELL