

BAKOMETER. 323 



Q. What is the STH SPECIAL RTTLB in 

 regard to the barometer ? 



A. In summer-time (after a long 

 continuance of fair weather) the barom- 

 eter will fall gradually for 2 or 3 days 

 before rain comes ; but if the fall of the 

 mercury be very sudden, a thunder-storm 

 is at hand. 



Q. What is the GTH SPECIAL RULE in 

 regard to the barometer ? 



A. When the sky is cloudless, and 

 seems to promise fair weather, if the 

 barometer be low, the face of the sky 

 will soon be suddenly overcast. 



Q. What is the TTH SPECIAL RULE in 

 regard to the barometer ? 



A. Dark dense clouds will pass over 

 without rain, when the barometer is 

 high ; but if the barometer be low, it 

 will often rain without any gathering of 

 clouds. 



Q. What is the STH SPECIAL RULE in 

 regard to the barometer ? 



A. The higher the barometer, the 

 greater is the probability of fair weather. 



Q. Why is the barometer HIGH in FINE 

 weather ? 



