FIG. PAGE

1. [Silver sheet floating on water] . . . . . 4

2. [Column and index of minimum thermometer] . . . 6

3. [Thread of golden syrup rising and forming a drop] . . 8

4. [Drops of different sizes resting on flat plate] . . 10

5. [Formation of a sphere of orthotoluidine] . . . 12

6. [Detached sphere floating under water] . . . . 13

7. [The centrifugoscope] . . . . . . . 14

8. [Aniline drops falling through cold water and ascending]

[through hot water] . . . . . . 17