Obseevations, December 6 — 12. 1843. 
191 
Species of Clouds, &c. 
Observer's 
Initial. 
h. 
8. Scud : sheets of cirri, crossed at right angles by linear cirri ; coloured corona about the moon, first yellowish-white, passing into brown, blue, 
and green successively ; the radius of the outer circle being about 4°. At 8 h 15 m a distinct halo of 20° radius. 
10. Scud -»— diffuse cirri and cirro-strati ; a few minutes ago there were a lunar halo and coloured corona. 
18. Masses of thin scud : sheets of cirri ; a coloured lunar corona ; occasional drops of rain. 
20. Patches of scud : a thick cirrous mass over most of the sky ; light rain. [slowly. 
22. Small patches of thin scud : cirro-cumulo-strati and cirro-cumuli : woolly and diffuse cirri, moving very 
0. Scud : thick cirrous clouds. 
2. Id. ; light rain. 
4. Two currents of scud. 
6. Very thick scud. 
8. Scud ; a few drops of rain. 
10. Id. 
18. Scud -t— cirri. 
20. Id. ■*— linear cirri to E. 
22. Id. +- id. N. 
0. Id. -t— linear and mottled cirri to SE. 
2. Id. -i— patches of cirri. 
4. Id. : beautifully mottled and reticulated cirri in strata radiating from SSE. and WNW. 
6. Id. : streak of woolly cirrus. 
8. Id. linear cirri and cirrous haze. 
10. Patches of scud +- linear cirri, cirro-strati, and cirrous haze ; the linear cirri in short lines pointing SSE. and these in strata lying WNW. to ESE. 
18. Scud -i- cirrous haze all round the horizon. 18 h 30 m . Scud passing over the Moon produces a coloured corona ; yellow, orange, blue, yellowish- 
green, and orange, are the colours from the Moon outwards ; the extreme radius being 6°. 
20. Cirrous scud. 
22. Scud : cirrous clouds. 
0. Id. +- id. 
2. Masses of scud : cirrous scud and cirrous clouds. 
4. Cirrous scud and woolly cirri, moving very slowly. 
6. Id. 
8. Id. 
10. Overcast. 
18. Scud : patches of mottled cirri and cirro-cumuli, moving very slowly. 
20. Id. ; clear on E. horizon. 
22. Id. [is from S. 
0. Thin scud -t— mottled, woolly, and diffuse cirri and cirro-strati ; wind in gusts, when blowing strongest it 
2. Id. -t- id. 
4. Thick scud. 
6. Id. 
8. Id. 
10. Thin scud -t— cirro-strati to E. 
18. Cirro-cumulous scud ; cirro-strati to SW. 
20. Loose scud, moving quickly ; heavy dew since 18 h . 
22. Loose scud ; clouds blue, yellow, and gray. 
0. Scud. 
2. Id. ; the lowest thinnest and moving quickest. 
4. Id. -i— loose cumuli to S. 
6. Id. 
8. Id. ; Auroral light ? to NNW. 
t 10. Id. ; very dark. 
18. Thick scud. 
W 
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