ABSORPTION SPECTRA. 



CLATE 18. 



2 .81 <M e * '-: M ^p :> ^,. 

 Ill' 



^ ;l . i 



Jl :io 2" 38 .57 .36 .31 



'iiiliniliwliiiiliiiil 



II .2t 



Jinilii 



J 



FIG. 70. 



FIG. 72, 



FIG. 69. SEE NO. 89. DAHLIA. 



FIG. 70. SEE NO. 102. VICTORIA BLUE 4R. 



FIG. 71. SEE NO. 99. CHINA BLUE. 



FIG. 72. SEE NO. 97. ALKALI BLUE 6B. 



HELIOTvPt CO., aOSTON. 



