262 THE REIGN OF LAW. 



panied by a corresponding change in all the other 

 limbs. Correlation of Growth in the other sense, 

 is that adjustment of those forces to the contin- 

 gencies of external circumstance, which secures 

 that all the changes which do take place shall be 

 changes adapted to the discharge of new functions 

 — to the fulfilment of new conditions of life — to 

 command ever new sources of enjoyment. 



Keeping, then, clearly in our view the distinc- 

 tion between these two different kinds of Cor- 

 relation of Growth, let us look at the phenomena 

 actually presented in the aspect and history of 

 Organic Forms, as respects both these kinds of 

 Correlation. 



As regards the first kind of Correlation, I have 

 referred to the law of Bilateral Symmetry as the 

 simplest and most obvious illustration. It is a » 

 law which at once connects itself with the idea 

 of Polarity of Force. But though this be one 

 kind of Correlation, almost universal, and may 

 very probably be the foundation of every other, 

 there are many Correlations of Growth between 

 which and mere Polarity there is no visible con- 

 nexion. The truth is that all the parts of an organ- 



