328 



ATMOSPHERIC ELECTRICITY. 



Ohservatioiis by De Saussure. 



Hours. 



State of the sky. 



Feb. 21,1785. 



9. 15 a. m 



11.10 a. m... 



2.10 p. in 



6 p. m 



6 p. m 



7 p. in 



8 p. m 



9 p. m 



10 p. m 



11 p. m 



12 p. m 



Feb. 22, 1785. 



1 a. m - 



2 a. m 



6. 15 a. m 



7. 30 a. m 



8.10 a. m 



9.10 a. m 



10.10a. m... 

 11. 10 a. m ... 



1. 10 p. m 



2.20 p. m 



3.30 p. m 



6 p. m 



6 p. m_ 



7 p. m 



8 p. m 



Feb. 23, 1785. 



0. 45 a. m 



8. 5 a. m 



10.7 a. m 



3.45 p. m 



5 p. m 



6 p. m 



7 p. m 



8 p. m 



12 p. m 



o 

 +2.0 

 1.6 

 1.1 

 1.1 

 1.0 

 1.8 

 2.0 

 1.8 

 1.2 



1.5 



1.2 



0.9 



1.2 



0.8 

 1.2 

 1.1 

 1.6 

 2.2 

 1.8 

 1.7 

 1.4 

 1.1 

 1.2 

 2.2 

 1.7 

 3.7 



1.0 

 1.2 



0.8 

 0.8 

 1.0 

 0.8 

 2.2 

 1.7 

 0.5 



Pale sun ; fleecy clouds. 



Fine sun. 



Fine sun. 



Sun setting. 



Some clouds in the southwest. 



Perfectly clear. 



Perfectly clear. 



Perfectly clear. 



Little clouds towards the horizon at the 



south. 

 The same, more extended towards the 



southwest. 

 The same, more extended towards the 



southwest. 



The same, more extended towards the 



southwest. 

 Clouds increase and approach each other. 

 Clear. 



Fogs, very light. 

 Fogs, very light. 

 Fogs, very light. 

 Fogs, very thick. 

 Fogs, very thick. 

 Fogs, very thick. 

 Fog, thin ; sun pale. 

 Weather, half cloudy ; sun pale. 

 Half cloudy. 

 More cloudy. 

 Half cloudy. 

 Cloudy ; fogs at southwest. 



Cloudy ; more foggy. 



Cloudy ; more foggy. 



Cloudy ; more foggy. 



Cloudy ; sun very pale.' 



Cloudy. 



Cloudy. 



Almost perfectly clear. 



Half cloudy. 



More cloudy. 



