18 



1845. 



Dec. 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 1846 



Jan. 1 



2 

 3 

 4 

 5 

 6 



8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 



HerricT^s Auroral Register. 



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



Cl'r a few minutes at Q^ : no A.B. : ov't from 6^'' to 9^^'^ : obs. impos. 



Very clear. No A.B. to 9'^. 



Clear most of ev'g : no A.B. seen to 10^ : considerably cl'ded aft. 8**. 



Clear, No A.B. to 10''. About lO"" becoming cloudy. 



Ov't. Obs. impos. to lO*", and doubtless all night. 



Ov't to lO'', and doubtless all night. 



Ov't and snowing. Obs. impos. to 10^^ 



Clear early in ev'g : no A.B. seen : ov't at 9^^'^, and to lO'' at least. 



Mostly clear after 7'^. No A.B. to lO'^. 



Clear. No A.B. to lO''. 



Ov't entirely.* (257) 



Clear. A.B. slightly suspected. None certain to 10\ 



Ov't. Obs. impos. to 12'^, and doubtless all night. 



Almost wholly ov't. Obs. impos. to lO'', and probably all night. 



Mostly ov't. Moon. Obs. nearly impos. to 10''.* 



Clear: moon: no A.B. at 6'', at 10'', or at 3'' a.m. : sky at 5'' p'y obse. 



N'ycl'r; cirrous streaks here and there : moon: no A.B. seen to lO**. 



Ov't. Obs. impos. to 10^'', and d's all night : began to rain d'g n't. 



Ov't, drizzling. Obs. impos. to 9f'', and doubtless all night. 



Ov't. Obs. impos. to 10^'', and probably later. 



Ov't. Obs. impos. to 10''. 



Mostly ov't. Moon. Obs. impos. to 10'', and probably all night. 



Cl'r to about 8'' : moon : no A.B. : after 8'' ov't : obs. impos. 8'' to lO''. 



Ov't almost completely. Obs. impos. to 11'', and prob. all night. 



Clear. Moon. No A.B. to 10|''. 



Clear. Moon rose at 7i^ No" A.B. to 11''. 



Al't wholly ov't. Obs. impos. to 10^'', and doubtless all night. 



Ov't, raining and snowing. Obs. impos. to 10'', and d's all night. 



Ov't and snowing. Clear at sunrise of 18th. 



Very clear. No A.B. to 10''. 



Clear : no A.B. to 10", or pos. a very faint aur. light bet'n 9'' and 10''. 



Almost wholly ov't. Obs. impos. to 10'', and doubtless all night.* 



Ov't, snowing : obs. impos. to 10'', p. much later : n'y cl'r at 6'' a.m. of 



Clear. No A.B. to 10^''. [22d. 



Very clear. A.B. seen, with intermissions, from 6'' to 11''.* (258) 



Clear chiefly to about 8", and no A.B. After 8'' ov't. 



Mostly clear. No A.B. seen. 



Ov't. Obs. impos. to 10'', at 12'', at 3'' 



Clear. No A.B. seen to 12''. 



Considerably clouded. A.B.* 



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



Ov't. Obs. impos. to 10^'', and d's all night: some rain in ev'g. 



Partly clear, but N. much obstructed.* 



A. M., and d's all night. 



(259) 



Dec. 30th. — Between 9h and lOh, and at lOh, I strongly suspected an A.B. ; the light may have 

 been due to thinness of clouds on the northern horizon. (Reported to me that later the sky 

 was more or less clear, and a considerable A.B. visible. No details.) 



Jan. 3d. — A.B. suspected, but impossible to be confident on account of clouds and moon. 



Jan. 20th. — About lOli suspected some unusual light along N. horizon ; probably due to thin- 

 ness of clouds. 



Jan. 23d. — Horizontal extent generally about 50° ; altitude at vertex 3° more or less. At 

 times segments of a distinct arch, but no streamers seen. 



Jan. 28th. — Not seen until about 9h, as I was within. From this time up to lOh there was no 

 great change ; a strong light about 7° high at vertex, and brightest near the border, cutting the 

 horizon about 80° apart. All very much embarrassed by clouds. I saw no streamers. 



Jan. 31st. — Observation scarcely possible to lOh at least. Some unusual light suspected in 

 N. between. 9h and lOh. 



