1887.] Mr R. T. Omond on Glories, Halos, and Cor once. 321 
Another solar corona seen at 
12 h 10 m . Colours and radii 
(outer edge of colour in each case) 
as on margin. 
o 
Radii. 
White 
Yellow 
• o • 
Red 1 
. 2° 39' and 2' 39' 
Dark blue 
• • • • 
Green 
• e • • 
Yellow . 
. 
Red 2 
. 4° 46' 
Dark blue 
. 
Green 
Red 3 
’. 7° 55' 
Blue 
Red 1 
. 9° 41' 
Solar halo seen between 9 and 10 hours, as sketched in fig. 4; 
colours as marked. The mock suns were red inside and blue outside; 
they lay distinctly on the outer edge of the halo (A). The follow- 
ing measurements of them were got : — 
Radius of red, 
,, white, 
,, blue, 
Left Moek Sun. 
22° 49' and 23° 17' 
23° 44' and 24° 13' 
24° 28' 
Right Mock Sun. 
23° 3' 
24° 13' 
24° 58' 
Faint traces of green and yellow were seen in the mock suns at 
10 h 10 m . The mock suns and horizontal white bar were about 24° 
above the horizon at 9 h . As the sun rose higher the bar curved 
upwards, and at noon was as sketched in fig. 5. The bar then 
extended inside the halo A almost to the sun, which it had not 
done in the morning. 
The following measurements were got at various times during the 
forenoon of the different parts by Mr Rankin : — 
Sun to western mock sun, 23° 46' 
,, eastern „ 23° 42' 
,, white circle E, 79° 56' and 81° 23' 
,, green at junction of C and I), 50° 26' 
Red of C to red of A, 25° 28' and 24° 48' 
Blue of C to blue of A, 25° 13' and 24° 32' 
Green of C to green of A, 24° 20' 
The arc B distinctly overlapped the halo A, the reds coinciding 
above the sun ; but the arc D only touched the halo C, its red 
combining apparently with the blue of C. 
At 12 h 20 m measurements were made of the wings between halo 
