TO HIS EXCELLEXCV 



JOSEPH CORREA DE SERRA, . 



FELLOW OF THE ROYAL SOCIETY, OF THE NATIONAL IN-- 

 STITUTE OF FRANCE, &C., &C. AND MINISTER OF 



H. M. F. M. or Portugal, brazil and al- 



GARVES, TO THE UNITED STATES. 



SIR, 



The active interest which you have ever 

 taken in the promotion of Natural Science, both 

 in Europe and America, and your desire to ele- 

 vate it to the rank of Philosophy, demands 

 the gratitude of all its votaries, and inspires the 

 feeble acknowledgments of your humble ser- 

 vant, the $t 



AUTPIOR. 



