191 1.] BARNARD— SELF-LUMIXOUS NIGHT HAZE. 249 



aurora was also present, but I have tried to confine the accounts to 

 what I have called, and believe to be, self-luminous haze. They 

 were not seen previous to June /, 1910. 



The Observations. 



1910, June jd 13 h om. These diffused luminous masses were 

 seen in dift'erent parts of the sky. They were specially noticeable 

 near the southern horizon where the appearance was that of a definite 

 whitish light stretching along above the horizon for a considerable 

 distance. Long bands of this matter were parallel with the southern 

 horizon and above Antares. In the east a long strip 3° or 4° wide 

 stretched from a Pegasi to a Andromedae and beyond. This moved 

 slowly eastward. At I3h 30m another was passing through the bowl 

 of the great '" dipper " in the northwest with a slow easterly motion. 

 A very broad one was situated about i^°-2o° from the zenith to the 

 west. They were about as bright as the Milky \Va}' in Cygnus. I 

 waited until near sunrise, and could then see a long mass of ordinary 

 haze, reddish with sunlight, occupying the position of one of the 

 strips that was seen near the bowl of the " dipper," which had been 

 visible as a luminous mass until the dawn had killed it out. There 

 were other strips and masses of haze at different points in the sky 

 when the sun ro>e. I think it was these streaks and patches of dif- 

 fused haze that were luminous during the night. The}- appeared as 

 ordinary haze clouds in daylight. During the entire night there had 

 been no ordinary trace of aurora. 



June 9. Though they were looked for several times none was 

 seen until about loh 30m or iih om. At iih 25m a long broad 

 hazy streak, as bright as the !Milky Way in Cassiopeise was seen 

 in the northwest. The lower end was in the " sickle "' of Leo near 

 the horizon. Its upper end was 15° below the polar star. From 

 a sketch at iih 25m the following points were taken which were 

 involved in the hazy strip : 



■y. loh 5m 8 -j- 2I^5, 



ot 9 5 8 + 49. 



It extended beyond this latter point for quite a distance — roughly 

 to about 



a /h om 8 + 67°. 



