822 PROFESSOR PIAZZI SMYTH ON COLOUR, 
6. PUCE or PLUM COLOU R—continued. 


Solution = 1, strength. 


Wave-number; Colour Region by 




Intensity. he in Brit. Inch. | Wave-number. 
Light begins 0 25°40 36 010 | Rep 
Maximum Licut in yellow 8 26:08 43 879 | YELLOW 
Middle of a dark band 2 26°37 46 816 | Crrron 
Middle of a bright green band : + 26°62 49 164 | GREEN 
Beginning of broad but dark blue band 2 26°97 52 274 | GLaucous 
End all 0 28°20 61 039 | LAVENDER 
Solution = 54, strength; shows one red-orange band only. 
Teicha adiacdt> 4-— See e a eet 0 | 2542 | 36 311 | Rep 
MAXIMUM . ; : , ; : : 4 25:80 40 933 | AMBER 
End all)... : : : : 0 26:10 | 44 072 | YELLOW 

Solution = 3; strength ; shows nothing; proving the colour to be a better obseurer 
than transmitter. 

7. Judson’s CRIMSON, similar to MAGENTA generally. 


COAL-GAS LUMINOUS FLAME as foundation. 



ratendiy. |) o,, | Ragepamber | alee: eal 
False red glare : , 0 24°86 29 087 | Ultra Rep 
First true red light . : : : ; 1 25°18 33 102 | Crimson RED 
Slit, by sodium light, 1st side . ‘ : idk 26°01 43 015 | YELLow 
i - 2d side . : ; ili 26:03 43 203 | YELLOW 
Maximum Licut, YELLOW : f 2 12 26:03 43 403 | YELLOW 
End of all light at violet : : 0 28°46 62 712 | LAVENDER 


Solution= gd, strength. Shows only one red and orange band. 



Licht bese’) Wis Reha 0 Dee 34 892 | Crimson RED 
Maximum Licht . 5 f . : 7 25°82 41 152 | Amper 
Light ends. : : ; : 0 26:09 43 975 | YELLOW 4 



