70 Canadian Record of Science. 



of cirrus, or cirro-cumulus clouds, moving east, at about 

 the same rate of speed, as the previous light. The presence 

 and arrangement of these wisps of cloud are sometimes 

 very difficult to distinguish at night, and at the dawning, 

 the weather conditions often change ; but on several 

 occasions I have been able to distinguish this succession 

 plainly enough by moonlight. 



Now, if it could be established that the eastward drift 

 was a feature of the average aurora, it would I think be a 

 step toward establishing a connection with the wind 

 circulation beneath, and possibly give a further insight 

 into the nature of the phenomena in general. 



These remarks of course apply to local observations 

 entirely, but would no doubt be capable of extension to a 

 wider region. 



The evening was raw and overcast. At 11.20 p.m. it 

 was still cloudy and cold. So much so, that heavy stratus 

 clouds looked almost like snowing. At 11.45 it was 

 clearing up on a westerly wind — -showing fair and clear 

 to the south. Cloud banks to the north passing down 

 N.E. The pole-star could be seen at this time well above 

 the cloud banks. There were two visible layers of cloud 

 with the ledge of the auroral light lying between them. 

 These banks to the north lay at a visual angle of from 

 40° to 60° above the horizon— rather higher in the 

 eastern sky, at this time, but rapidly passing down. The 

 lower layer was of the heavy stratus banks blowing 

 smartly off to E. by 1ST. The upper clouds had hardly 

 any movement that was noticeable in comparison ; but in 

 places where masses showed thickest, there was a slow 

 motion E. by S. — or inclined that way. These high 

 clouds also showed marks of a N". and S. streak, or 

 probably of a N. by W. blow, making wind ruffles. They 

 were of the cirrus varieties, the highest part barred 

 with wind, and the under inclined to a cumulus "cotton 

 wool" bottom, showing a slow movement E. by S. They 



