Herriclc's Auroral Register. 



25 



1839 



Apr. 15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



May 1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



|Mostly ov't to lO'^, when about half clear. No A.B. visible then. 

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

 Ov't to 10'', and doubtless all ni<;ht. Obs. ini|)os. 

 Cl'r : no A.B. during the n't : moon interf. until about 1 a. m. (19th). 

 Mostly clear. No A.B. seen to lO*", nor at midnight. 

 Mostly clear. No A.B. seen to 10'', Moon. 



Clear: faint A.B. lying along N. horizon : I saw no streamers.* (88) 

 no A.B. to 11'^, or pos. a very taint light : moon makes it unc 



CI 



M'y cl'ss, hazy: no A.B. seen to 'lO'\ but obs. dif. on ac't of moon 



Ov't. Obs. impos. to lO.p, [and haze. 



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



Mostly clear. No A.B. seen to 10''. Moon interferes. 



Almost wholly ov't. Obs. impos. to 10''. 



Ov't. Obs. impos. to 10''. [ov't to 10'', and obs. impos. 



Clear a few minutes at 8'' ; no A.B. seen then, but twil't interf : aft. 



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



Ov't, sprinkling: obs. impos. to lO*", and doubtless all night. 



Clear. No A.B. to 10''. Thunder storm during night. 



No A.B. to 10''. 



No A.B. to 10\ 



(89) 



Clear. 



Clear. 



Mostly 



Clear. 



Clear. 



Ov't. 



ov't.* 



No A.B. to 10''. 

 No A.B. to 9i\ 

 Obs, impos. to 10" 



and none at 1'' of 8th. 



''. Thunder shower from 1'' to 2'' of 9th. 

 Mostly clear in north.* (90) 



Clear : diftuse auroral light in N. : no streamers noticed to 1 1**. (91 ) 

 Clear; hazy about horizon. No A.B. to 10''.* 

 Clear. No A.B. to 10\ 



Ov't. Obs. impos. to 10'', and doubtless all night: rain in night.* 

 Mostly clear after 9''. A.B. seen.* (92) 



Mostly clear except a bank of clouds in N. and N.W.* (93) 



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

 Ov't; rain during night: obs. impos. to 10'', and prob. all night. 

 Mostly clear ; few clouds about N. Moon interferes.* 

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

 Clear; hazy near horizon. No A.B. to 10+''. 



Mostly ov't. Obs. impos. (unless a very extensive aurora) to 10''. 

 Ov't. Obs. impos. to 10'', and probably all night. [liant. 



Clear to 10'', when it became ov't. No A.B. seen to 10'' : moon bril- 

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

 Clear. No A.B. to 91". Moon brilliant. 

 Mostly ov't. Obs. impos. to 10''. None suspected. 

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

 M'y ov't : obs. n'y or quite impos, to 11'', and d's all n't : none susp. 

 Clear : no A.B. at 9'' : moon rose about 9'' 10°* : no A.B. seen to lO"". 



April 21st. — [Streamers were seen here however.] I saw the same appearance at 3h a. m. 

 of 22d. 



May 5th. — Throu2;h openings in clouds an unusual lisht appeared in N., doubtless an A.B. 

 [Very tine display, perhaps coronal, as I hear from good authority.] 



May 9th. — A faint auroral dawn visible all the evening up to lOh at least. I saw no streamers. 



May llth. — A.B. at Worcester, Mass. Boxt. Med. and Surg. Jour.., xx, 18. 



May 18th. — Is there a faint light in N. behind the clouds V 



May 14th.— Streamers 20° high at times ; a little red light ; going on at lOh. 



May 1.5th.— Moon low in W. A.B. undoubtedly, but mostly concealed by clouds. I saw two 

 streamers 30° high. 



May 18th. — No certain A.B. to lOh, but possibly a faint light. 



