of the Atmosphere, 



1841, November 15. — Barom. 29'5 in. ; therm. 35°. Haze 

 and clouds. 



Apparent time, 

 h m 



2 



2 15 



3 56 



4 1 

 4 5 



3 41 



3 54 



4 3 



4 7 



R=27^° in zenith and horizon. 



Arago. 



1841, November 16— K = 30° in zenith; 26^° near horizon 



3 45*1 

 3 471 



Sky whitish blue 



13 20 



18 10 

 17 40 



19 50 



Babinet. 



16 31 



17 55 

 16 36 

 16 



\° near 



Arago. 



/17 58 

 117 10 



1841, November 17.— Barom. 29*43 in. Frost. See Phil. Mag. 

 vol. xxx. p. 167. 



11 35 a.m. R=26°| in zenith; 14|° near horizon. 14 24 



12 Polarization between the sun and horizon. 



Babinet. 



2 1 .. .. .. .. 11 30 



2 25 . . .. .. .. 11 50 



2 40 .." .. .. .. 11 30 



3 15 „.'• . . .. .. 13 15 



3 23 . . . . . . . . 14 



3 54 .. .. .. .. 17 6 



Arago. 



2 30 R = 29| in zenith; 26|° near horizon. 22 31 



2 48 Fine day and fine sky . . 23 34 



3 19 .. .. .. .. 21 30 



3 51 R= 291° in zenith ; 26f° near horizon. 19 



1841, November 23. — Barom. 29*3 in. Cold, damp day; 

 wind west. 



3 57 .. .. .. .. 18 51 



4 



Babinet. 



15 24 



1841, November 25. — See Philosophical Magazine, vol. xxx. 

 pp. 123, 163. 



1841, December 1. 



R = 28|° at' 30° above S. horizon. 



4 3 

 4 14 



4 5 



4 10 



Arago. 



16 41 



17 51 



Babinet. 



15 34 

 14 52 



