298 
On the Aurora Borealis in Summer. 
the date only is mentioned. 
e adds a short and comprehensive description. 
given in “the Julian or old style.” 
1728. —— = 
July 2 
= 
8 
Aug. 18. 
0? 
July 10. 
— 
Slight. 
Very great: corona.” 
Slight. 
Slight. 
Unusual: 
Slight. 
Slight. 
Very great. 
Great. 
Slight. 
Slight. 
hag sre 
slight. 
1733. Sept. 8. 
29 
Oct. 27. 
Noy, 27. 
29, 
1734. May 14. 
Sep 
1735. Aug. 20. 
1736. 
1737. Mch. Z 
D 
1738. 
A 
1739. 
Me 
Apl. 20. 
In some of the more important cases, 
The dates are 
Great. 
Slight. 
Great. 
Great. 
peri 
Narrow zone fr. ©. to w. 
Slight. 
Slight. 
Slight. 
Greater than 7th. 
Great and variegated. 
Very gr’t: corona: fiery- 
d do. do. 
0. 
Slight. 
Uncertain. | 
Great: fiery. 
* The description of this case would apply very well to the display of Rie 
1837, as seen here. 
“ Permagnum observavi Lumen Boreale, cujus Radii luci 
at non colorati, vibrantes, terminari jeaeeeaer in coruscante quasi —_— 
i. p. 12, 
paulo ultra Zeni 
VOL. 
