ocp 



ACADEMIE UES SCIENCES. 



c ^ .^ 



S= o 



Q a 



fc o 







6' 

 +1 



(M 



o 



+ 



+1 



o 



!0 



+1 



+1 



50 

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"C c/" 3 

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S c 

 ce'" 



— c -a 



c 

 te 



(« — c vj 



bfc O 



0) G t'î 



— O w 



I ^ 



+ 5 





+ ^ 





"^ ^ T^ 



= S 



