( 199 ) 



Variations de la déclinaison tiiagnétique observées à Vaujours , -près 

 de Paris , /e 18 e< /e 19 mars 1840. 



(Les heures sont en temps moyen de Gcttlingue. ) 



0'. 



10'. 



15'. 



20'. 



30'. 



40'. 



45'. 



50'. 



55'. 



Minuit . 

 1 h. m. 



51.82 

 51.7 

 51.7 

 51.63 

 51.70 

 51.78 

 51.82 

 51.9 

 52.20 

 52.83 

 53.12 

 52.58 

 51.42 

 49.75 

 48.73 

 48.53 

 48.98 

 49.95 

 50.78 

 50.90 

 50.25 

 51.27 

 51.78 

 .03 



51. 



51.72 

 51.6 

 51.72 

 51.80 

 51.80 

 1.95 



2.93 

 53.13 

 52.50 

 51.30 

 49.72 

 48.67 

 8.60 

 9.10 

 50.05 

 50.75 

 50.90 

 50.30 

 51.28 

 51.80 

 54 37 



51.8fl 



51.77 



51.70 



51.62 



51.0 



51.80 



51.80 



51.98 



52. 3U 



52.98 



53.08 



52.42 



51.20 



49.58 



.8.63 



,8.65 



9.18 



0.10 



50.93 



50.82 



50.28 



51.40 



52.05 



54.45 



51.78.' 

 51.78 

 51.70 

 51.70 

 51.72 

 51.80 

 51.78 

 52.00 

 52.33 

 53.00 

 53.08 

 52.28 

 51.07 

 9.42 

 48.53 

 48.70 

 49.18 

 50.15 

 50.97 

 )0 82 

 50.48 

 51.42 

 52.00 



51.78 

 51.78 

 51.6 

 51.6 

 51.72 

 51.80 

 51.87 

 52.02 

 52.38 

 53.00 

 3.13 

 52.23 

 50.93 

 49.22 

 48.50 

 48.73 

 49.25 

 50,18 

 50.82 

 50.77 

 30.77 

 51.45 



51 



51.78 

 51.77 

 51.65 

 51.70 

 51.75 

 51.78 

 51.90 

 52,03 

 52.47 

 53.03 

 53.00 

 52.13 

 50.68 

 49.08 

 48.50 

 8.07 

 49.37 

 50.2 

 50.98 

 50.77 

 51.00 

 51.48 

 07 



51.77 

 51.77 

 51.67 

 51.68 

 51.73 

 51.80 

 51.87 

 52.05 

 .51 

 53.12 

 52.97 

 52.08 

 50.53 



48.47 

 48.67 

 49.47 

 50.32 

 50.98 

 50.72 

 50.95 

 51.38 

 52.13 



51.83 

 51.75 



1.75 

 51. G7 

 51.68 

 51.70 

 51.82 

 51.87? 

 52.07 

 52.57 

 53.12 

 52.95 

 51.93 

 50.42 

 48.95 

 48.42 

 48.70 

 49.52 

 50.40 



1.00 

 50.75 

 50.92 

 51.52 

 52,37 



51.82 

 51.75 

 51.77 

 51.67 

 51.70? 

 51.72 

 51.83 

 51.92 

 52.12 

 >2.63 

 53.23 

 52.87 

 51.95? 

 50.25 

 48.83 

 48.43 

 48.33 

 49.62 

 50.43 

 50,95 

 50.80 

 50,70 

 51.55 

 52.17 



51.83 

 51.75 

 51.75 

 51.63 

 51.67 

 51,77 

 51.78 



52.15 

 52.70 

 53.2 

 52.78 

 51.65 

 50.1 

 48.80 

 48.43 

 48.38 

 i9,65 

 0.53 

 50.97 

 50.80 

 50.72 

 51.63 

 52.57 



51.82 

 51.77 

 51.75 

 51.67 

 51.75 

 51.78 

 51.80 



53.12 

 52.70 

 51.62 

 50.00 

 48.80? 

 48.52 

 48.62 

 9.73 

 50.02 

 50.93 

 50.57 

 50.92 

 51.75 

 53.02 



51.83 

 51.78 



51.65 

 51.73 

 51.78 

 51.80 



17 

 52.80 

 53.10 

 52.67 

 51.53 

 49.88 

 48.75 

 48.53 

 48.82 

 49.78 

 50,72 

 50.97 

 50.23 

 51.18 

 51.75 

 3.68 



