Mr. E. Joseph Lowe on remarkable Solar Halos. 441 



halo (III.), of 33° radius, and also of a straw colour, was visible. 

 This circle touched the halos (1 and 2 at IV.), and its centre 

 was 11° below the true sun. The upper half of the halo (III.) 

 was bright; but the lower portion^which is marked by the 

 dotted lines, was not visible, owing to cumuli being very 

 abundant on the south horizon. The lower portion of the halo 

 (I.) was also at this time nearly invisible, but the parhelion 

 (IV.) was even more brilliant than before. 



This appearance continued until h 10 m , then the halo (III.), 

 together with the lower portion of the halo (I.), vanished. The 

 parhelion (IV.), with the halo (II.) and upper half of the halo 

 (I.), was still very bright. 



At h 40 m the whole of the halo (I.) was again very bril- 

 liant, as also was the halo (II.) and parhelion (IV.). The 

 upper half of the halo (III.) had again become visible, and a 

 new feature to the phsenomenon occurred, to describe which 

 it will be necessary to continue the arc of a halo (II.) so as to 

 describe a circle, which we will do with dotted lines, to show 

 that that portion was imaginary. 



In a horizontal line with the centre of the circle (II.) on 

 the north-east side, and at a distance of 34° from the centre, 

 was formed an arc of another circle (V.), inverted with regard 

 to the halo (II.), of (apparently) 33° radius. This was of a 

 pale silvery hue. The arc of a halo (V.) was formed touching 

 the imaginary part of the halo (II.) on a horizontal level with 

 the centre of the halo (II.). This was very apparent, though 

 not very brilliant. 



At h 45 m halo (V.) disappeared, together with halo (III.) 

 and the lower part of the halo (I.). 



l h m . All the circles had disappeared, and the sky was 

 scattered over with cumuli. 



l h 5 m . The halo (II.) and the upper portion of the halo (I.) 

 and parhelion (IV.) were again visible and brilliant. 



]h >jm m AH had again disappeared. 



l h ll m . The halo (I.) again visible, but the parhelion (IV.) 

 was not formed, although the halo was visible where it was 

 before formed. 



l h 12 m . Halo (II.) faintly visible. 



l h 13 m . All had again disappeared, and cumuli had be- 

 come very abundant. 



l h 30 m . The halo (II.) and upper portion of the halo 

 (I.) together with the parhelion (IV.) were once more formed. 

 The parhelion was very brilliant. Much linear cirri was 

 visible, with cumuli beneath moving rather rapidly. A cu- 

 mulostratus also was moving on the south-east horizon and 

 another on the east horizon. 



Phil. Mag. S. 3. Vol. 29. No. 196. Dec. 1846. 2 H 



