Originally published in 1924, this book forms the third of a three-volume series relating to 'the whole field of logic as ordinarily understood'.William Ernest Johnson (18581931) was a renowned British logician and economist, and also a fellow of King's College, Cambridge. Originally published in 1924, this book forms the third of a three-volume series by Johnson relating to 'the whole field of logic as ordinarily understood'.William Ernest Johnson (18581931) was a renowned British logician and economist, and also a fellow of King's College, Cambridge. Originally published in 1924, this book forms the third of a three-volume series by Johnson relating to 'the whole field of logic as ordinarily understood'.William Ernest Johnson (18581931) was a renowned British logician and economist, andalso a fellow of King's College, Cambridge. Originally published in 1924, this book forms the third of a three-volume series by Johnson relating to 'the whole field of logic as ordinarily understood'. The series is widely regarded as Johnson's greatest achievement, making a significant contribution to the tradition of philosophical logic. This book will be of value to anyone with an interest in Johnson's theories, philosophy and the historical development of logic.Introduction; 1. Fact and law; 2. The criteria of problematic induction; 3. Dependency and independency; 4. Eduction; 5. Plurality of causes and of effects; 6. Cause-factors; 7. The continuant; 8. Application of causal notions to mind; 9. Transeunt and immanent causality; 10. Convergent and divergent causality; 11. Temporal and spatial relations involved in causality; Appendix on eduction.