72 THE TISSUES OP PLANTS 



which it is temporarily adorned, that the more permanent 

 parts, the stem and branches, are enabled to increase in 

 size from year to year. There in no such cessation to 

 growth and vital activity in the animal body ; hence the ca- 

 pillaries form permanent parts of the fabric. In both 

 plant and animal it is however manifest that they exercise 

 the same function, and are intimately connected with the 

 nutrition of the different parts of the organism. 



Thus the plant and the animal are closely allied to each 

 other. Histology has demonstrated not the analogy, but 

 the absolute identity of growth in the animal and the 

 plant. 'Nutrition and reproduction in animals, is as clearly 

 a vegetative process, as that the sun shines in the heavens. 



