Proc. Roy. Soc. Ed in. 
Vol. XXIII. 
Scale of Wave Lengths. 
680 660 640 620 600 580 560 540 520 
500 
480 
42(1 
Spectrum of Nova Persei, as seen 
on March 3rd, 1901. 
Intensity Curve. 
L. RITCUTE SON, EDEN? 
