Trans. R.Dubl. Soc. Ser. ll. Vol. VIL. Plate XXII. 
Absorption Spectra. 
A BE 1 G HKM N 0) 
RED POTASSIUM CHROMOXALATE AT DIFFERENT TEMPERATURES 
NAMELY :-lat 100° 2 at 75° 3atT 50° and 4 aT 20°C. 
W.N Hartley 
Absorption Spectra. 
D le de G llMC IL, WE MN | 
NEODYM AMMONIUM NITRATE lar 20° C, 2 at 100° C. 
PRASEODYM AMMONIUM NITRATE 3at20°C.4 art 100°C. 
W. N. Hartley 
Swan Electric Engraving C 
