ATMOSPHERIC ELECTRICITY. 



329 



Observations hy 31. Arago. 



Hours. 



March 3—7. 20 a. m. 

 7.30 a. m. 



7. 50 a. m. 



8 a. m 



8. 30 a. m. 



9 a. m 



9. 50 a. m. 

 9. 45 p. m. 

 9. 15 p. m. 



March 6—7. 30 a. m. 

 7. 45 a. m. 



8 a. m. 



8.30 a. m.. 

 9 a. m 



9. 15 a. m.. 

 10.20 a. m. 

 5. 45 p. m.. 



7 p. m 



9.50 p. m.. 



March 14 — 7.40 a. m.. 



8 a. m 



8.20 a. m.. 

 8.30 a. m.. 

 8.45 a. m.. 



9 a. m 



10 a. m 



11.15 a. m. 

 12 a. m 



0. 45 p. m.. 



1. 20 p. m-. 

 1.40 p. m., 



5. 45 p. m., 



6. 45 p. m., 



7. 15 p. m.. 



Electrometer. 



o 



+0.50 



1.45 



2. .30 



1.00 



2.60 



6.25 



5.10 



3.00 



0.85 



-1.50 



0.75 



9.50 



6.00 



15.00 



23.50 



9.00 



0.00 



0.20 



10.00 



-f-1. 65 



3.25 



14.00 



18.00 



24.00 



t26. 00 



21.00 



5.25 



2.00 



4.50 



5.50 



3.00 



0.00 



0.20 



2.00 



State of the 

 fiky. 



Winds. 



Clear 



.-do 



--do 



--do 



..do 



..do 



--do 



-.do 



..do 



--do 



--do 



..do 



..do 



..do 



..do 



do 



do 



--do 



.-do 



.-do. 



-.do 



-.do 



..do 



..do 



..do 



..do 



..do 



.-do 



..do 



..do 



..do 



Vaporous . 



.-do 



-.do 



E. 



E. 



E. 



E. 



E. 



E. 



E. 



E. 



E. 



SE. 



SE. 



SE. 



SE. 



SE. 



SE. 



SE. 



E. 



E. 



E. 



W. SW. 



W. SW. 



W. SW. 



W. SW. 



W. SW. 



w.sw. 



S. SW. 



S. SW. 

 S. SW. 

 S. SW. 

 S. SW. 

 S. SW. 



s. 



s. 

 s. 



The hourly observations of Schiibler indicate a first minimum at four 

 o'clock in the morning, a first maximum at eight o'clock, a second 

 minimum at five o'clock in the evening, and a second maximum at 

 eight and a half o'clock in the evening. 



If we look at the first eighteen observations of De Saussure, which 

 include from twenty-four to twenty-five hours, during which the 

 sky remained almost clear, we see that at first the electricity was 

 quite strong towards nine o'clock in the morning ; that it decreased 

 gradually till six o'clock, when the first minimum was exhibited ; 

 it then increased till eight o'clock, when it reached the second 

 maximum; and then it decreased anew till the time of the second 

 minimum, which took place about six o'clock the next day. We do 



« Deviation variable. 



fMore thaa26o. 



