282 Dr. Herschel's Experiments for investigating 
1. Very faint blue, 
2. Faint blue. 
- - Pale red. 
3. Blue, 
4. Bright blue, 
- - Faint red. 
5. Purple blue, 
6 . Bluish red, 
- - Whitish red. 
7. Deep red. 
8. Red, 
- - Greenish white. 
9. Red, 
10. Red, 
xi. Pale red, 
- - Pale bluish green. 
12. Paler red, 
23. Dingy yellow. 
14. Dingy yellow. 
To ascertain whether the second surface of the subjacent 
glass, which by other experiments I know to have a multiply- 
