24 OF LIFE. 



Q. Why are the animal functions double? 



ft. A perpetuation of their existence being essential, 

 the loss of one is supplied by the duplicate. 



Q. The animal and organic functions differ in another 

 respect, what is it? 



/?. In the animal there is harmonious function as well 

 as symmetrical structure; in the organic there is nothing 

 of that. This harmony in the animal functions is essen- 

 tial to concordant sensation. 



Q. Give further illustration of this idea of harmony in 

 function. 



#. If the two auditory or optic nerves conveyed dif- 

 ferent impressions, the sensations and actions must conse- 

 quently be confused. Discordant action of the hemispheres 

 of the brain, must produce similar discrepancy. 



Q. But this general principle of harmony in function 

 does not hold good in the action of the right and left sides 

 of the body. 



*ft. It does not; but the superiority of the right arm and 

 hand is the effect of habit. 



Q. Of what consequence is irregularity in organic life? 



#. You will infer its unimportance from the fact, that 

 one kidney may separate more urine than the other; that 

 one lung may admit more venous or eject more arterial 

 blood than the other; that more organic action may exist 

 in one salivary gland than another; that one side of the 

 spleen, pancreas, or liver may receive more blood than 

 another, and yet the organic action maintain its integrity 

 and regularity. 



Q. You have already given some of the distinctions be- 

 tween animal and organic life; there are others, and will 

 you state one? 



