Fig. 1. A sketch showing an arrangement o£ genes contained in individuals; the rosaiy- 

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

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

 idea in the simplest way, I r^arded the rosary as a line in one plane, yet we may assume that 

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

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



