320 BIOLOGICAL PHYSICS 



agency, or directing power, which the materialist and 

 spiritualist alike are compelled to name and to regard as 

 the ego the living principle not detectable by any scientific 

 processes, but representing, or remaining, the irreducible 

 residuum of the organised body after the dissolution of all 

 its material parts, the then nature and whereabouts of 

 which, and of what still exists, constituting the unfathomable 

 mystery so warmly discussed by divine and scientist all 

 along the ages, and affording a theme for the considera- 

 tion of the transcendentalist, at once hoary with age and 

 verdant with eternal youth. 



These evolutional arrangements originate primarily in 

 the earliest embryonic histological disposals of the epiblastic 

 elements, by means of which the meso- and hypo-blastic 

 areas are inter-penetrated, innervated, and traversed, until 

 their boundaries are reached, when they culminate and con- 

 clude by assisting to form the external coverings, the 

 internal linings, and the muscular textures of the entire 

 body. 



In concluding this somewhat inconsequent study, we 

 would remark that inside all these complex envelopes and 

 investitures of cell wall, cell protoplasm, nuclear wall and 

 nuclear protoplasm, and nucleolar wall, is disposed the 

 deepest and smallest of all corporeal organised particles, the 

 nucleolus, an apparently independent entity texturally, but 

 functionally, we think, most intimately related with its 

 environment, and apparently connected with the most 

 important duties of, receiving, producing, conserving, 

 disposing, and transmitting, nerve impulse, and energy, 

 a tiny material organism, responsive to the most delicate 

 molecular disturbance, conserving unexhausted nerve 

 energy, originating, and transmitting, nerve impulse 

 ranging from the most delicate, or "pale cast" of, thought, 

 to the most explosive, and disruptive, motor " con- 

 vulsions, in action individually gentle, collectively, cyclonic. 

 Who will portray, or is it possible even to discover, by 

 means of the employment of the most transcendental 

 scientific experimental process, the subtle scheme, by which 

 these wonders are wrought ? May it not be, that a 

 radium-like molecular strand of nucleolar substance, or 

 protoplasmic material, projects itself along the innermost 



