DISTRIBUTION AND GROUPING OF CELLS 73 



furnish the energy, which moves the atoms to the 

 building site of the cells, in the first instance. But 

 the atoms are not only moved ; they are carried at 

 the prcper time and deposited at the right place to 

 build up the organ or part which is being constructed. 

 We cnnct believe that the mother has any knowledge 

 of, nor power over, the distribution of the atoms and 

 cells, which go to build up the embryo body; nor can 

 we e' y en imagine that the embryo itself distributes 

 them. So it would be absurd to suppose tint the 

 atoms and cells move and distribute themselves, auto- 

 matically, in such a manner as to build up the embryo. 

 How do the cells know when to begin the for- 

 maticn of the morula? How do they know when it 

 has been completed and when to begin the construc- 

 tion of the blastuh ? How do they know when to 

 take the form of the gastrula, and when to enter the 

 next stage? 



The forces ?nd motions required to build up the 

 morula (a solid ball) are diTerent from these required 

 to c n-truct the blastula (a hollow ball) and the gas- 

 trula (a two-layered hollow group of cells will an 

 apperture at one end of it) ; the morula, blastula and 

 gastruh, each, requiring forces and motions peculiar 

 to itself. Now, what psychic force stops the forces 

 and motions, which build up the morula, and sets 

 to work the force - which construct the blastula and 

 afterward the gastrula? 



It is obvirm that thrse cells, (if there be enough 

 of them), may be so grouped as to form a sphere, cube, 

 cylinder plate cr any ether figure; and that any of 

 these may be solid. liHJrw or porous. The head, brain, 



