3. By increased proportion of the medium, whether parallel or acute

1. Chapter 1 2. PART I. 3. PART II. 4. PART III. 5. PART IV. 6. PART V. 7. PART VI. 8. INTRODUCTION. 9. PART I. 10. PART II. 11. 1. By a more oblique direction of the impinging luminous object through 12. 3. By increased proportion of the medium, whether parallel or acute 13. 4. By the distance of the recipient surface from the refracting medium 14. 5. When a chemical property produces its effects under all these 15. PART III. 16. PART IV. 17. PART V. 18. PART VI. 19. introduction either of a complemental contrast, or some variety of hue. 20. 90. Warm as the flesh colour of the colourists is, it still never 21. 1826. Similar phenomena have been also investigated with great labour 22. 1804. Compare with the "Trattato della Pittura," p. 141. Other points 23. 5. Fulvo. 10. Rosso violaceo (7). 24. 19. Giallo. 28. Lacca accesa (15). 25. 33. Verde giallognolo. 38. Lacca-rosea (22). 26. 42. Verde-giallo (27). 27. 1839. The last-named work contains much useful information. 28. 1619. It was republished at Rotterdam in 1718.