C 423 ] 



- 



Latitude. 



From Lat, 

 to 



Hence we fee that up to latitude 40° the temperature of the 

 northern is to that of the fouthern nearly as 14 to 13,5, and from 

 latitude 40° to latitude 50° as 1 1 to 9, and from latitude 50° to 

 60^ as 8 to 6 nearly, in the fummer feafon. 



3G2 CHAP. 



