Part I. General Principles: 1. Prefaratory explanations; 2. The relatedness of nature; 3. Equality; 4. Some principles of physical science; Part II. Physical Applications: 5. The equations of motion; 6. On the formula of dJ2; 7. Permanent gravitational fields; 8. Apparent mass and the spectral shift; 9. Planetary motion; 10. electromagnetic equations; 11. Gravitation and light waves; 12. Temperature effects on gravitational forces; 13. The electrostatic potential and spectral shift; 14. The lib effect; 15. Permanent directions of vibration and the doubling effect; 16. Steady electromagnetic fields; 17. The Moon's motion; Part III. Elementary Theory of Tensors: 18. Fundamental notions; 19. Elementary properties; 20. The process of restriction; 21. Tensors of the second order; 22. The Galilean tensor; 23. The differentiation of tensor components; 24. Some important tensors.