POLARISATION OF THE ATMOSPHERE. 



259 



1841, November 2. —See " Edinburgh Transactions," vol. xxiii. pp. 215 and 224. 

 November 4. „ ,, „ 



November 15. — Barom. 295 ; therm. 35. Haze and clouds. 



Apparent Time. 

 2 h m 



2 15 



3 56 



4 1 

 4 5 



3 41 



3 54 



4 3 



4 7 



R=27i° in zenith and horizon. 



1841, November 16. — R = 30° in zenith; 26i° near horizon. 



Apparent Time. 

 3 h 45 m 1 

 3 47 / 



Sky whitish blue. 



Ars 



LgO. 



13° 



20' 



18 



10 



17 



40 



19 



50 



Babinet. 



16° 



31' 



17 



55 



16 



36 



16 







Ar 



ago. 



17° 



58' 



17 



10 



1841, November 17.— Barom. 29-43. Frost. See " Edinburgh Transactions," 

 vol. xxiii. p. 228. 



Apparent Time. 



ll h 35 m a.m. R=26|° in zenith; 141° near horizon. 

 12 Polarisation between the sun and horizon. 



2 



1 



2 



25 



2 



40 



3 



15 



3 



23 



3 



54 



2 



30 



2 



48 



3 



19 



3 



51 



R=29|° in zenith ; 26|° near horizon. 

 Fine day and fine sky. 



R=29J° in zenith ; 26A° near horizon. 



Ara 



go- 



14° 



24' 



Babinet. 



11° 



30' 



11 



50 



11 



30 



13 



15 



14 







17 



6 



Arago. 



22° 



31' 



23 



34 



21 



30 



19 







1841, November 23. — Barom. 29-3. Cold, damp day; wind west. 



Apparent Time. 

 3 h 57 m 



4 



Arago. 



18° 51' 



Babinet. 



15° 24' 



1841, November 25. — See "Edinburgh Transactions," vol. xxiii. pp. 216, 224. 

 1841, Dec. 1. 



Apparent Time. 

 4 h 3 m 

 4 14 



4 5 



4 10 

 VOL. XXIV. PART II. 



R = 28i° ; "30° above S. horizon. 



Arago. 

 16° 41' 

 17 51 



Babinet. 

 15° 34' 

 14 52 



4B 



