508 
Proceedings of the Royal Society 
Eed 
Yellow 
Green 
Red 
Yellowish 
white 
D 
colours as in diagram; tlie (outer) yellow a very narrow 
strip. Occasionally traces of a third ring were seen. 
Eadius of outer red, 4° 56' ; radius of inner red, 2° 11'; 
radius of yellow, 4° 23'. All good measurements. 
Oct. 23, 1885. — Lunar corona at 2 h , similar to that at midnight 
on 22nd, except that the inner yellow was more distinctly marked. 
No blue or green inside the inner red. Yellows, both outer and 
inner, only thin strips ; reds and green broader than, and not so 
sharply defined as, the yellows. Eadius of inner red, 2° 29' ; radius 
of outer red, 4° 43' ; radius of inner yellow, 2° 4' ; radius of outer 
yellow, 4° 8'. 
Oct. 23, 1885. — Lunar halo, colourless, seen at 3 h . Eadius to 
inside of halo, 21° 48' ; radius to outside of halo, 25° 13'. The halo 
was somewhat indistinct, and the measurements are rather rough. 
At midnight double corona formed on scud. The 
size varied according to the sort of cloud or fog it was 
formed on. The following measurements were taken 
within three minutes of each other [colours as in dia- 
gram] — 1st radius of inner red, 2° 14'; 1st radius of 
outer red, 4° 18'; 2nd radius of inner red, 2° 50'; 2nd 
radius of outer red, 4° 49'. 
Oct. 25, 1885. — At 4 h double lunar corona with 
traces of third ring ; colours as in diagram. As be- 
fore, the yellows were narrow and the green broad. 
Eadius of inner red, 2° 10' ; radius of outer red, 4° 20' ; 
radius of inner yellow, 1° 45'; radius of outer yellow, 
2° 50'. 
Red 
Yellow' 
Bluish 
green 
Red 
Bluish 
white 
D 
Red 
Yellow 
Green 
Red 
Yellow 
Watery- 
white 
D 
Nov. 11, 1885. — At 9 h glory, with only one broad red ring 
observed. Eadius to inside of ring, 1° 44'; radius to outside of 
ring, 2° 21'. At 15 h glory with three rings, as in fig. 5 ; the inner- 
most a mere blotch, the next a well-marked ring with all the colours ; 
the outermost the same, but fainter. Eadius of red 3 , 3° 46' ; radius 
of red 2 2 , 1° 52'. [Eed outside in both rings.] 
Nov. 16, 1885. — At 9 h glory seen on passing fog; colours as in 
fig. 6. The inner red close to the shadow of the observer’s head. 
Eadius of red 2 , 7° 38' ; red 3 , too faint to measure. 
Nov. 18, 1885. — At 23 h double lunar corona, red outside. The 
