75 



1*7° ; and as far as the twenty-third of north la- 

 titude, the greatest variation of the sea extended 

 no farther than 3*7°. 



This great regularity in the distribution of the 

 heat of the ocean is manifested also in a very 

 sensible manner, when we compare, in the two 

 hemispheres, zones equally distant from the 

 equator. 



VOL. I. 



