Trans. Roy. Dubl. Soc., Ser. I., Vol. VII. Prats XVII, 
Nickel Chloride. 
NiCl::9 H20. 
Nickel Sulphate. 
NiS0O47H20. 
Nickel Nitrate. 
Ni( N Os) *26H20 . 
Nickel Acetate. 
Ni(C2H302)2. 
Nickel Potassium 
Sulphate. 
NiSO4: K2S04:6H20. 
Nickel Ammonium 
Sulphate. 
NiSOg:(NH4)2804°6H20 
Nickel Bromide. 
NiBr2-3H20. 
Nickel Iodide. 
Nile:7H20. 
Potassium Nickel 
Oxalate. 
Ammonium Nickel 
Oxalate. 
aig 
ono 
lake 
ie 
iT 
rT 
Rec 
“x 
The Absorption Spectra of solutions of Nickel Salts at ditterent temperatures. 
These solutions vary in colour from bluish green, grass-green, and 
yellowish green to brown and almost opaque liquids. 
