Hem'cFs A^iroral Hegister. 



July 



1841. 



June 17 

 IS 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 1 

 2 

 3 

 4 

 5 

 6 

 1 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 



43 



(186) 



]\[ostly ov't.* 



Ov't. Obs. impos. to 104^'', and doubtless all night. 



Ov't. Ob.s. impos. to 10|'', and doubtless later. 



Partly clear to 94'' ; after that to 10'' ov't and obs. impos. 



Clear. No A.B.'to 11''. [A.F>. seen at Worcester, Mass.] 



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



Ov't. Obs. impos. to 10'', and ])robal)ly all nio-lit. 



Ov't. Obs. imi])os. to 104", and probably all ni<;ht. 



Ov't; drizzHni>- mist. Obs. imi)os. to 10'', and doubtless all night. 



Mostly ov't. Obs. imi)os. to 10'\ and probably most of the night. 



Ov't. Obs. impos. to 10'', and doubtless later. 



Clear. Moon interferes. No A.B. seen to 10|'\ 



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



Mostly clear but hazy : moon : no A.B. to 104'\ but obs. uncertain. 



Sky obscured here and there by cirri. Moon. No A.B. to 10|^". 



Clear in north; some clouds elsewhere. Moon. No A.B. to 10". 



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



Mostly clear. Moon. No A.B. to 10". 



Ov't: frequent lightning. Obs. impos. to 10", and doubtless later. 



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



Ov't, -with slight rain. Obs. im))OS. to 10", and doubtless all night. 



Beautifully clear. No A.B. to 10", when the moon rose.* 



Mostly ov't. Obs. impos. after — to 10", and doubtless later. 



Very clear. No A.B. to 10".* 



Mostly clear. No A.B. to 10". 



Clear. No A.B. to 10|". 



Clear to about 10", Avlien it suddenly became ov't : no A.B. to 9" 50™. 



Ov't to 10", and })rob. most of night. Thunder shower about 9". 



Clear, except a long cloud in N. No A.B. seen to 10^". 



Clear. No A.B. to 10^".* 



Clear. No A.B. to 10" 20'". 



Clear. No A.B. to 10^". 



Considerably clouded in north.* {^^^^) 



Clear. No A.B. to 10^". 



Clear.* (188) 



Mostly clear, but hazy around horizon. No A.B. seen to 10;^". 



M'y ov't ; showery to 1 1", when n'y cl'r in N., and there was no A.B. 



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



Ov't. Obs. impos. to 10", and doubtless to midnight. 



Clear. Moon. No A.B. to 104-". 



Mostly ov't. Obs. impos. to 10", and })robably all night. 



June 17th. — Amoug the broken clouds in the N. there wns much unusual light about 10b 30m 

 (for it was too much overcast earlier); a considerable A.B. without much doubt. [A.B. seen 

 at Worcester, Mass.] 



July 8th.— At 9h 45m went out with Mr. A. B. Haile and Mr. J. T. Hotchkiss to look for the 

 zodiacal light. We decide that there is a faint light or milkiiiess, extending from about Cas- 

 siopeia to Leo, through the N.W., about 10^ or 13° high. It has no dctinite outline but is cer- 

 tainly real. Near Casi-iojjcia it is of course confounded with the Galaxy. 



July 10th. — From flhlOm to Sli.^Om Mr. A. B. Haile and myself observed for the zodiacal light. 

 It corresponds with what we saw Thursday the 8th. It is about Leo very faint, and must be 

 inspected by indirect glances. It reaches perhaps to Denebola, 



July Kith. — Faint light, which I suppose the "zodiacal," still to be seen aljout 9li 4.5m to lOh, 

 from N. to N.W., as described a few days since. 



July 10th. — A conspicuous A.B. vi>ir)le from flh to lOli, and doubtless later, illuminating N. 

 horizon about 90°, and to a central altitude of 15°; much general light and occasional stream- 

 ers, some of them bright. Color yellowish-white. Clouds interfere with observation. 



July 21st,— A laint auroral illumination at IQh, and also at 2h of 23d; a dusky light, like fog 

 slightly illuminated. I saw no streamers. 



