| CHAPTER |
| [I.] | The need for a common scientific language, by L. Pfaundler | 1 |
| [II.] | The Délégation pour l'adoption d'une langue auxiliaire internationale, by R. Lorenz | 11 |
| [III.] | Linguistic principles necessary for the construction of an international auxiliary language, with an appendix on the criticism of Esperanto, by O. Jespersen | 27 |
| [IV.] | On the application of logic to the problem of an international language, by L. Couturat | 42 |
| [V.] | The relationship of the international language to science, by R. Lorenz | 53 |
| [VI.] | The question of nomenclature, by W. Ostwald | 61 |
| [VII.] | Conclusion; Reading, Writing, and Speaking, by L. Pfaundler | 69 |