152 



HEAT OF HIGHER LAYERS OE AIR. 



At a 



height of 



feet. 



On the Brocken . . 

 At Clausthal . . . 

 At Gottingen . . . 

 At Miinster (same lati- 

 tude) 



a g 



At Berlin (1° lat. far- 

 ther N.) 



/ Munich 



[ Augsburg 



\ Ratisbon 



\ Tubingen 



I Stuttgart 



f Karlsruhe 



V Vienna 



/ The Hospice of St. Go- 



I thard 



] Geneva 



Basle (1° lat. farther N.) 



Zurich (same lat. as 



Basle) 



f nearly 

 \ same lat. 



3500 

 1750 



480 



190 



110 



1570 



1520 



1030 



1020 



760 



350 



500 



6450 



1220 



800 



1300 



Degrees. 



Cent. 



1 



4-9 



8-3 



95 



91 

 9-1 



8 



8-6 

 8-5 

 9-8 



10 



10-5 



-1 



9-7 



9-8 



Fahr. 



338 



40-8 



47 



49-1 



48-4 



48-4 



46-4 



47-5 



47'3S 



49-6 



50 



50-9 



30-2 



49-26 



49-6 



47*8 



On the far more extensive table-lands of Mexico 

 and Quito, the lowering of the temperature is 

 far less in proportion, than in the highlands of 

 Germany. 



According to Humboldt the mean temperatures 

 are — 



Of Mexico. . . . 



At Vera Cruz (in 



same latitude) . . 



||f | At Quito . . . , 



Jl !« ) At the Sea-coast . . 



ce 3 a 



At 

 heights 

 of feet. 



Degrees. 



Cent. 



Eahr. 



6990 

 on sea- 

 coast 

 8970 



16-3 



25 



15-6 



26 



61-34 



77 

 59-1 



78-8 







