THE ATMOSPHERE. 



75 



and thus it would appear to be coming from the northeast and 

 going toward the southwest ; in other words, it would be a north- 

 east wind. 



PLATE I. 



DIAGRAM OF THE WINDS. 



125. The better to explain, let us take a common terrestrial 

 globe for the illustration. Bring the island of Madeira, or any 

 other place about the same parallel, under the brazen meridian ; 

 put a finger of the left hand on the place ; then, moving the fin- 

 ger down along the meridian to the south, to represent the parti- 

 cle of air, turn the globe on its axis from west to east, to represent 



