Fig. 1. A sketch showing an arrangement of genes contained in individuals ; the rosary- 

 beads representing genes, which change from time to time as if they were in one ciirrent of 

 communication in their essence. Although in the above case, as I was trying to explain my 

 idea in the simplest way, I regarded the rosary as a line in one plane, yet we may assiime that 

 the same rosary may be extended in boiindless space of three dimensions ; at the same time, 

 our rosay-beads may be regarded as solid bodies of three dimensions. 



