130 



THE MECHANISM OF LIFE 



bonate, is transformed into calcium carbonate. CaCl 2 +K 2 C0 3 

 = CaC0 3 +2KCl. Thus an osmotic growth can make a 



Fig. 39. — An osmotic growth photographed by transverse light to show the 

 construction of the terminal organs. 



choice between the substances ottered to it. rejecting the 

 potassium of the nutrient liquid, and absorbing water and the 

 radical CO,, while at the same time it eliminates anil excretes 



