68 TllANSACTIONS AND rilOCEEDINGS OF THK [Skss. lxv. 



" Symbiosis is in fact the fundamental Ijiological principle 

 on which is based the constitution, differentiation, and 

 perfectability of organisms. The symbiosis of biomolecules 

 forms the biomore, that of biomores the l^iomonad and 

 eell, that of cells the body of the multicellular organism." 



The author next introduces us to his interpretation of 

 the phenomena of cell division. The fundamental cause of 

 division is always the same, whether it be the division of 

 a biomolecule or of a biomore, of a biomonad or of a cell 

 — it is the orientation of parts. The orientation of atoms 

 causes the division of the biomolecule, that of biomolecules 

 the division of the biomore, and that of biomores causes 

 the division of the biomonad and the cell. To the objec- 

 tion that the division of the biomolecule is a chemical 

 division, while that of the others is a morphological one, it 

 is pointed out that the molecule is not only a chemical 

 but also a morphological individuality, and it is only our 

 present inadequate means of observation that prevent us 

 from having a morphological conception of the biomolecule. 

 The following diagram may represent the molecules and 

 their relative arrangement of a biomore, A : — 



a 



(1) f " 



d 

 As assimilation proceeds the chemical composition of 

 the biomolecules will change, and their arrangement, which 

 depends on their reciprocal affinities, will also change, and 

 take the new arrangement of Fig. 2 — 



I' 

 f c' 



a' 

 If Fig, (2) correspond to phase M, that is, to the final 

 stage just when doubling occurs, then a' will be divided 

 into aa, and h' into hi, and so on as under — 



hh 

 f e 



d c 

 aa 



