20 BAROMETRICAL RULES. 



Great fall during frosty weather, — thaw continued with S. or 

 S. E. wind, and returning frost if S. W. wind. 



Lowest depressions, wind S. or S. E., — much rain and severe 

 gale. 



In general : a rapid rise gives a violent wind ; continued fall, 

 continued wind. 



Great depression in summer, — storms, wind and rain, thunder 

 and hail. 



Rise with S. wind, — high temperatures. 



Mercury unsteady, — air in electrical state. 



No great storm sets in with a steady rise. 



N. and S. winds are the origin of our greatest storms. 



W. winds blow mostly at night. 



E. winds calm at night, blow by day. 



There is least wind at sunrise and sunset, and most wind at i or 2 

 p. M. ; wind with the sun fine ; wind against sun mercury falls, bad 

 weather generally. 



Meteors are not common during low temperatures ; the Aurora 

 borealis has been seen at all heights of the barometer. It has 

 been noticed and recorded that, " the finest and most beneficial 

 state of the atmosphere, more especially as regards the health of 

 man, is with a uniform pressure at the mean height of the climate 

 varying from 29.80 to 30.00." 



A poetic barometrical rhyming table which lately came to my 

 notice reads as follows : 



"When rise begins after low, 

 Squalls expect, and clear blow; 

 Long foretold long last, 

 Short notice, soon past, 

 First rise after low 

 Pore tells stronger blow." 



Still another comes to mind : 



"When the glass falls low, 

 Prepare for a blow; 

 When it rises high. 

 Let your kites fly." 



