Observations, December 6 — 12. 1843. 191 



Species of Clouds, &c. 



ii. 



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'^ 15™ a distinct halo of 20° radius. "Yy 



0. Scud -1— diffuse cirri and cirro-strati ; a few minutes ago there were a lunar halo and coloured corona. W 



Masses of thin scud : sheets of cirri ; a coloured lunar corona ; occasional drops of rain. B 



Patches of scud : a thick cirrous mass over most of the sky ; light rain. [slowly B 



Small patches of thin scud : cirro-cumulo-strati and cirro-cumuli : woolly and diffuse cirri, moving very W 



Scud : thick cirrous clouds. W 



Id. ; light rain. " W 



Two currents of scud. B 



Very thick scud. B 



8. Scud ; a few drops of rain. W 



0. Id. W 



8. Scud -f— cirri. B 



0. Id. -1— linear cirri to E. B 



2. Id. -I- id. N. W 



0. Id. -I— linear and mottled cirri to SE* W 



2. Id. -t— patches of cirri. W 

 i. Id. : beautifully mottled and reticulated cirri in strata radiating from SSE. and WNW. B 



3. Id.: streak of woolly cirrus. B 

 3. Id. -1— linear cirri and cirrous haze. W 



). 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. B 



3. Scud H- cirrous haze all round the horizon. IS^ SO"". 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°. g 



I. Cirrous scud. " B 



*. Scud : cirrous clouds. ' W 



). Id. ^- id. W 



1. Masses of scud : cirrous scud and cirrous clouds. W 

 L Cirrous scud and woolly cirri, moving very slowly. B 

 ;. Id. B 

 !. Id. W 

 ). Overcast, W 



Scud : patches of mottled cirri and cirro-cumuli, moving very slowly. W 



Id. ; clear on E. horizon. W 



Id. [is from S. B 



Thin scud -i— mottled, woolly, and diffuse cirri and cirro-strati ; wind in gusts, when blowing strongest it B 



Id. -.- id. B 



Thick scud. W 



Id. W 



Id. B 



Thin scud -i— cirro-strati to E. B 



\. Cirro-cumulous scud ; cirro-strati to SW. W 



Loose scud, moving quickly ; heavy dew since IB"^. W 



Loose scud ; clouds blue, yellow, and gray. B 



Scud. _ _ W 



Id. ; the lowest thinnest and moving quickest. B 



Id. -1— loose cumuli to S. "W 



Id. W 



Id. ; Auroral light ? to NNW. B 



Id. ; very dark. B 



Thick scud. W 



