WEATHER. 145 



A. Because the heat of the earth can 

 readily escape into the upper regions of 

 the air, and is not confined and pent-in by 

 thick clouds. 



Q. Why do ice FEEL DEPRESSED in SPIRITS 

 on a WET murky DAY ? 



A. 1st Because when the air is 

 laden with vapour, it has less oxygen. 



2ndly The air being lighter than 

 usual, does not balance the air in our 

 body: and 



3rdly Moist air has a tendency to 

 relax the nervous system. 



Q. What is meant by the " air balancing the 

 air in our body ? 



A. The human body is filled with air 

 of the same density as that around : if, 

 therefore, we ascend into purer air, or 

 descend into denser air, the balance is 

 destroyed, and we feel oppressed and 

 suffocated. 



Q. Why do we feel OPPRESSED and SUFFO- 

 CATED if the air around is not of the SAME DENSITY 

 as that in our body ? 



A. If the air around be more dense, 

 it will squeeze our body in by its weight : 



o 



