THE NEW SCIENCE OF METEOROLOGY 



from the dark and cold hemisphere to the heated and 

 illuminated place, in all directions, towards the place 

 of the greatest cold. 



" As there is for the atmosphere of this earth a con- 

 stant cooling cause, this fluid body could only arrive 

 at a certain degree of heat ; and this would be regularly 

 decreasing from the centre of illumination to the oppo- 

 site point of the globe, most distant from the light and 

 heat. Between these two regions of extreme heat and 

 cold there would, in every place, be found two streams 

 of air following in opposite directions. If those streams 

 of air, therefore, shall be supposed as both sufficiently 

 saturated with humidity, then, as they are of different 

 temperatures, there would be formed a continual con- 

 densation of aqueous vapor, in some middle region of 

 the atmosphere, by the commixtion of part of those 

 two opposite streams. 



" Hence there is reason to believe that in this sup- 

 posed case there would be formed upon the surface of 

 the globe three different regions the torrid region, the 

 temperate, and the frigid. These three regions would 

 continue stationary ; and the operations of each would 

 be continual. In the torrid region, nothing but evap- 

 oration and heat would take place; no cloud could be 

 formed, because in changing the transparency of the 

 atmosphere to opacity it would be heated immediately 

 by the operation of light, and thus the condensed water 

 would be again evaporated. But this power of the 

 sun would have a termination; and it is these that 

 would begin the region of temperate heat and of con- 

 tinual rain. It is not probable that the region of tem- 

 perance would reach far beyond the region of light ; and 



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