"The Twenty Steps"

from Ernest Norling, Perspective Made Easy,

Macmillan New York 1939

1. The Horizon , The Vanishing Point, The Eye-Level .

2. The Eye-Level and Its Relationship to Perspective Drawing.

3. Parallel Lines as We see Them. Parallel Lines related to One-Point Perspective.

4. The Three Sets of Parallels. Locating the Point and the EyeLevel.

5. The Two Vanishing Points, The Height Lines.

6. Placing the Two Vanishing Points. The Error of Close Spacing.

7. Showing how the Vanishing Points Move in relation to each other.

8. Building Perspective with Bricks.

9. Placing Figures and an object in a Drawing.

10. Center of Interest. Changing the View. Roofs in Perspective.

11. Interiors. Placing of Furniture.

12. Finding the center. Dividing Space into Halves. Practical Applications.

13. Cylinders in Perspective. Drawing Ellipses.

14. Practical Uses of Cylinders in Drawing. Dividing the Circle.

15. Dividing a Surface in Perspective. Drawing a Checkerboard.

16. Shade and Shadow.

17. Reflections.

18. Unusual Perspective. Up and Down Points. Examples.

19 Perspective Downhill. Perspective Uphill. The False Eye-Level.

20. Mechanical Perspective.