96 GRAND STRATEGY OF EVOLUTION 



able service of conveyance for them must take place 

 simultaneously, and along approximately parallel lines. 

 For growth and conveyance automatically control each 

 other, since the point, or cell, or organ, or individual, 

 not properly supplied, either ceases to exist, or does 

 not come into being; and the one unhindered in its 

 self-expression, and freely served, grows up to the full 

 capacity of its distributors. 



The members of a growing community of cells are 

 subject to precisely the same kind of conditions as 

 human beings in a growing city, or nation. In both 

 cases, the conditions inevitably created by growth ap- 

 proach nearer, and nearer, to an ultimate balancing 

 point which lies somewhere between the minimum rate 

 of local consumption and the maximum efficiency of 

 the available conveyors. 



The rise and fall of this point marks the oscillation 

 in the progress of evolution and organization. It rises 

 as the ways and means of conveyance increase, and falls 

 as they diminish. But while there is no limitation to 

 the potential power of growth, or to the demand for 

 constructive materials, there are very definite limita- 

 tions to the available supply and to the rate of their 

 conveyance. 



In other words, all kinds of growing things demand 

 more supplies and better protection. The additional 

 requirements for income, outgo, and exclusion cannot 

 be provided without better administration in the sys- 

 tem of conveying supplies to the sources of demand, 

 the removal of waste, and the exclusion of harmful 

 agencies. 



It is this ever present potentiality for growth, which 

 is perpetually checked, or thwarted, by its own sue- 



