30 Frauenhofer on the Refractive and Dispersive Powers 
Refracting 
Cn' — Bn' 
Dn'— Cn' 
En'~Dn- 
' Fn'— En' 
Gn'— Fn' 
’ Hn'—Gn' 
Media. 
Cn — Bn 
Dn — Cn 
En — Dn 
Fn — En 
Gn — Fn 
Hn — Gn 
Flint glass. No. 13. 
and Water, 
2.562 
2.871 
3.073 
3.193 
3.460 
3.726 
Flint glass, No. 13. 
and Crown glass, 
No. 9. 
1.900 
1.956 
2.044 
2.047 
2.145 
2.195 
Crown glass, No. 9. 
and Water, 
1.349 
1.468 
1.503 
1.560 
1.613 
1,697 
Oil of Turpentine 
and Water, 
L371 
1.557 
1.723 
1.732 
1.860 
1.963, 
Flint glass, No. 13. 
and Oil of Tur- 
pentine, 
1.868 
1.844 
1.783 
1.843 
1.861 
1.899 
Flint glass. No. 13. 
and Kali, 
2.181 
2.338 
2.472 
2.545 
2.674 
2.844 
Kali and Water, 
1.1T5 
1,228 
1.243 
1.254 
1.294 
1.310 
Oil of Turpentine 
and Kali, . 
1.167 
1.268 
1.386 
1.381 
1.437 
1.498 
Flint glass, No. 3, 
and Crown glass, 
No, 9. 
1.729 
1.714 
1.767 
1.808 
1.914 
1.956 
Crown glass, No. 13. 
and Water, 
1.309 
1.436 
1.492 
1.518 
1.604 
1.651 
Crown glass, M. 
and Water, 
1.537 
1.682 
1.794 
1.839 
1.956 
2.052 
Crown glass, M. 
and Crown glass, 
No. 13. 
1.174 
1.171 
1.202 
1.211 
1.220 
1.243 
Flint glass, No. 13. 
and Crown glass, 
M. 
1.667 • 
1.704 
1.715 
1.737 
1.770 
1.816 
Flint glass, No. 13. 
and Crown glass, 
M. 
1.517 
1.494 
1.482 
1;534 
1.579 
1.618 
Flint glass. No, 30. 
and Crown glass. 
No. 13. 
1.932 
1.904 
1.997 
2.061 
2.143 
2.233 
Flint glass, No. 23. 
and Crown glass, 
No. 13, 
1.904 
1.941 
2.022 
2.107 
2.168 
2.268 
