Ill 



At each succeeding birth the 

 individuality, to thrive, must be 

 in harmony with its changed sur- 

 roundings, and the cells that 

 swarm in every living body strug- 

 gle to bring this to pass. It is the 

 business of the cell to obey the 

 pushings of the governing force 

 in the organization to which it be- 

 longs. The plant needs water, 

 minerals, air, sunshine. Its at- 

 tendant cells hear the cry of their 

 master and build roots into the 

 ground and branches into the air, 

 and weave leaves into lungs and 

 laboratories. Note a vine in some 

 cave — how it works its way 

 toward the hole through which 

 sunshine is streaming, and how it 

 50 



