HEAVENLY BODIES 



465 



During the day on the moon the temperature must rise to a tre- 

 mendous height, while at night it drops far below zero. 



Dry and Wet Moon. When a line joining points or horns (cusps) 

 of the moon lies nearly parallel to the horizon the moon is called 



FIG. 354. Different phases of the moon. 



the " dry " moon, since it will hold water. When the line connecting 

 the points or horns (cusps) of the moon is perpendicular to the 

 horizon, it is called a " wet " moon. 



The direction of the form of the crescent has nothing to do with 



