WEATHER. 139 



Q. Why is a RED SUN-SET an indication of a 

 FINE DAY to-morrow ? 



A. Because (notwithstanding the cold 

 of sun-set) the vapours of the earth are 

 not condensed into clouds. Our Lord 

 referred to this prognostic in the follow- 

 ing words : " When it is evening ye say, 

 it will be fair weather, for the sky is red." 

 (Matt. xvi. 2.) 



Q. What is the cause of a coppery YELLOW 

 SUN-SET ? 



A. Because the vapour of the air is 

 actually condensed into clouds ; in which 

 case it " refracts" (or bends) the yellow 

 rays of the sun towards the horizon, 

 where they are reflected at sun-set. 



Q. Why is a YELLOW SUNSET an indication 

 of WET ? 



A. Because the vapours of the air 

 are already condensed into clouds ; rain, 

 therefore, may be shortly expected. 



Q. What is the cause of a RED SUN-RISE ? 

 A. Vapour in the upper region of the 

 air just on the point of being condensed. 



Q. Why is a RED and LOWERING sky at SUN- 

 RISE an indication of a WKT DAY ? 



