= = a 
Vili.] PLANTS AND ANIMALS. 137 
Se 
it sometimes to his advantage, but as often to his 
disadvantage. He uses it to his disadvantage only 
because he is ignorant of those laws upon which the 
whole universe is governed, and by which the har- 
mony of Nature, in spite of its immense diversity, 
is attained. Is not this sufficient reason why an 
elementary acquaintance with these laws should be 
insisted upon ? 
