of the Atmosphere. 125 



1842, April 20. — Barom. 30*02 in. Wind west; very fine day. 



Apparent time, 

 h m 



5 50 p.m. 



6 29 „ 



6 59 „ 



7 45 „ 

 7 59 „ 



R = maximum polarization. 

 In zenith. In horizon. 



Height of neutral point 

 above the antisolar point. 



22 50 



19 21 



20 55 

 20 10 

 24 8 



1842, April 26. — Barom. 30'00 in. Not a cloud in the sky 



from 



morning till night 

 5 21 p.m. 



1842, April 29. 



5 54 p.m. 



6 1 „ 

 6 45 „ 



p.m. 



1842, May 15.- 



6 29 



6 46 



7 26 



8 26 



-A haze. 

 15 



20i 



23^ 



15 



1842, November 14.— Barom. 296 in. 



55 A.M. 



3 „ 



25^ 



19v 



9 16 

 9 31 

 9 43 



9 48 



1842, November 20.— Barom. 29-74 in. 



10 8 a.m. 21± 



10 15 „ 

 10 27 „ 

 10 39 „ 

 10 55 „ 



13 43 



13 51 



19 28 



20 10 



19 15 



18 4 



18 35 



22 25 



28 35 



28 12 



24 6 



19 59 



^ine frosty and ( 



19 50 



18 40 



15 22 



15 



14 30 



13 45 



Cold and clear 



18 5 



17 30 



16 25 



45 15 



15 5 



11 



Neutral point lingering in the horizon. 



1842, November 21 

 morning. 



9 1 A.M. 



9 13 „ 



11 4 „ 



12 22 p.m 

 12 43 „ 



1 40 „ 



■Barom. 2977 in.; therm. 31°. Frosty 



21 10 

 26£ 19| 20 25 



15 45 

 Neutral point below land horizon ; bands scarcely 

 Neutral point in horizon. [visible in horizon. 



16 30 



