‘Changes caused on the Spectrum, &c. By T. Palmer. 229 
towards the red: take, for example, two vegetable colouring 
matter spectra; first, leaves of Lobelia; secondly, petals of blue 
Cineraria, for which I must refer you to Figs. 3 and 4. 
Fig. 1.—CHLOROPHYLL IN O1L NoRMAL. 
M. A. Observations. 
1 | 23°955 | Centre .. .. | 652°0 | Class 1. Very black; size -510. 
2 | 22-700 59 car pedal O0GrO » 1. Centre dark, ends shaded; 
size * 200. 
3 | 21°700 x ob on ae 7(OPar » 1. Very shaded ; size °400. 
4 | 20°500 | Commencement | 515°5 | Shaded at first, terminating in a very 
black absorption. 
Fic. 2.—CHLOROPHYLL IN Orn AcID. 
| 
1 | 23°85 | Centre 662°0 | Class 1. Very black; size °5. 
NOSES Sete een | OUSwe » 1. Shaded; size 3. 
Si 295 a vo co | BBL » 1. Black; ends shaded; size °3. 
4 | 20°5 Commencement | 515°5 | Shaded at first, terminating in a very 
| black absorption. 
Condition. | A. | A. | A. | Ratio.4 
IharGybl Vac be 652°0 598°5 547-25 if 8 OGL 
ET ACIGY tere 662°0 608°0 537°0 Ios) °9188 
Fic. 3.—LEAVES OF LOBELIA IN ETHER. 
M. A. Observations. 
1 | 23:892 | Centre .. .. | 658°0 | Class 1. Very black; size °415. 
2 | 22-650 5 sco, |) CULE », 1. Centre dark, ends shaded ; 
size °3. 
3 | 21:450 os Bo no | Eawe 3, 1. Very shaded; size °3. 
4 | 20°050 s oe, | aa2rO » 1. Black; size °3. 
5D | 26°6 Commencement | 512°0 | Very black; general absorption. 
Fic. 4.—Buivur CINERARIA IN OIL. 
1 | 22°44 | Centre .. .. | 615°0 | Class 1. Centre dark, shaded at ends; 
size *435. 
2 | 21°135 = co io || ore » 1. Centre dark, shaded at ends; 
size 630. 
3 | 20°0 + ss Ooo: O » 1. Very shady; size °4. 
4 | 19°25 = «» « | 490°0 | Same as No. 1; size °d. 
D> | 16°0 Commencement | 426°0 | General absorption. 
a 
