92 ANIMAL MECHANICS 



universe, exists by the continuance of a power, no 

 less admirable than that which rules the heavenly 

 bodies ; he sees that there is a revolution, a circle 

 of motions no less wonderful in his own frame, 

 in the microcosm of man's body, than in the 

 planetary system ; that there is not a globule of 

 blood which circulates, but possesses attraction as 

 incomprehensible and wonderful as that which 

 retains the planets in their orbits. 



The economy of the animal body, as the eco- 

 nomy of the universe, is sufficiently known to us 

 to compel us to acknowledge an Almighty Power 

 in the creation. What would be the consequence 

 of a further insight whether it would conduce 

 to our peace or happiness whether it would 

 assist us in our duties, or divert us from the per- 

 formance of them, is very uncertain. 



