llerrick''s Auroral Register. 



119 



1851. 



Feb. 8 



9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 



Oct. 



10 

 11 

 12 

 13 



Ov't. Obs, impos. to 9''. 



Ov't and misty. Obs. impos. to 9^\ 



Ov't, misty and rainy. Obs, impos. to 9^*^, and d's all night. 



Clear. Moon. No A.B. seen to 10". 



Clear. Moon. No A.B. seen to 9. 



Ov't. Obs. impos. to 9^''. 



Ov't and rainy. Obs. impos. to 10'', and doubtless all night. 



Ov't. Obs. impos. to 9^'\ and probably all night. 



N'y cPr : moon : no A.B. seen to 9'\ but cl'ds interf. to some extent. 



Clear. No A.B. to 9". 



Clear. A.B. all the evening.f (402) 



Clear : about 9'^ susp. a faint auroral light, otherwise no A.B. to lO''. 



Ov't and raining. Obs. impos. to 10'^, and doubtless all night. 



Ov't and raining. Obs. impos. to 9*^, and doubtless all night. 



Clear at high altitudes. Foggy. No A.B. seen to 9'\ 



Clear. No A.B. about 9'\ Within doors at earlier hours. 



Ov't. Obs, impos. to 9'' at least. 



Clear. No A.B. to ^^.\ 



Much clouded in the N. No A.B. seen to lO"", but obs. nec'y unc.f 

 ******** 



Clear: moon : no A.B. seen 6^'' to T**, or at 9'' : within 7*^ to 9''. 



Clear. Moon. A.B. as early as 9'\ and probably earlier.* (408) 



Ov't. Obs. impos. to 10'\ and probably all night. 



Clear. Moon. No A.B. to Sf". 



Ov't at S*", and obs. impos. 



Clear, or nearly so. Moon. No A.B. to 9^". 



Clear. Moon. No A.B. seen to 9*^. 



Clear, but somewhat hazy. Moon. No A.B. seen to 9*". 



Clear. Moon. No A.B. seen to g^**. 



Clear. Moon. No A.B. seen to 9^''. 



Ov't to 9^* at least, and obs. impos. 



Ov't and rainy. Obs. impos. to 8^'\ and doubtless all night. 



Nearly clear. Moon. No A.B. seen to 9^^. 



Oct. 2d. — A low indistinct arch, and about lOh some streamers. 



+ Near tlie close of February, 1851, Mr. Herrick was attacked by a fit of sickness so severe 

 that it was not supposed that he could survive it. From this sickness he recovered very slowly. 

 In Aujrust he was able to give partial attention to business, but his Journal was not resumed 

 till October. The followinu: record was left by Mr. Herrick upon a loose sheet. It is inferred 

 that at least a portion of these observations could not have been made by him. 



1851 



Feb. 18 Clear. Moon. Fine auroral arch at 7h, 3° or 4P high ; continued to 9h 4.5m. Alti- 

 tude 23°, and amplitude 120= to 130°. Sometimes there was more than one arch. 

 At lOh 30m or lOh 45m the northern sky was filled with red streamers and white ; 

 so to Uh at least. Two-thirds of the sky was filled with auroral matter and 

 streamers ; could occasionally see an imperfect corona. Soon after lib it sub- 

 sided almost entirely. Did not look after this. 



25 Clear. No A.B. to lOh 30m. A slight suspicion however. 



28 Ov't to 9h, and probably later. 

 March 7 Ov't and snowing at 8h ; probably ov't during night. 



12 Thinly ov't to lOh. No A.B. seen. 



22 Clear. A general light low down about Sh 45m. (403) 



28 Cl'r: A.B. ; first noticed streamers at 9h 30m: no arch, not much light at 11 hSOm. (404) 



29 Clear. A.B., ill-defined arch 1° to 1° 30' high ; only a few streamers at 9h. (405) 

 31 Clear. No A.B. at IQh 30ra. 



April 28 Ov't to lOh. 



May 1 Broken clouds about 8h. Mr. E. W. Blake saw A.B. about lOh 30ra to lib ; saw no 

 streamers. (406) 



7 Ov't to lOh. 

 June 5 A.B. Arch 40° to 50° high. (407) 



7 1 Ov't. Obs. impos. to 9li SOm. 



