CHAPTER VI 
ANIMALS AND THE WEATHER 
OT many factors govern the lives of the 
-L ^ denizens of the earth more than the 
weather—heat, cold, dampness, dryness, fog, 
and mist, all affecting their well-being, fashion¬ 
ing their habits, moulding their destiny, and 
also having a direct influence upon their health 
by regulating the spread of disease. 
Although disease is ever present amidst 
us, yet a healthy creature dwelling under 
natural conditions is endowed to a certain 
extent with the power to fight against the 
evil, this power or partial immunity having 
been handed down from generation to genera¬ 
tion. But if an individual be forced to change 
its normal habitat and environments, it is 
liable to come into contact with diseases it 
has not hitherto been called upon to face, 
or against which it has not received any 
inherited immunity, with results that are likely 
to prove fatal. 
This fact is revealed very clearly in regard 
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