The Absorption Coefficient of Solution for Monochromatic Radiation. 

 TABLE 21. Nickel Nitrate, in Water (Figs. 19 and 20) Continued. 



of the red absorption band, the A c curves show that A is a constant. 

 From 803/x/z to 978/^u, a region including the long wave-length side of 

 the red band and the region of low absorption beyond this, the A c 

 curves show that A decreases with dilution. Beyond 1,018/zju, on the 

 edge of the infra-red, again A is a constant for all values of c. 



