ON PROOF 265 



as necessary to the theory — in the present case, 

 lengthened infancy with increase of psychic powers — 

 are facts which themselves have been vainly seeking 

 classification (by science) on any theory whatever, 

 and have remained utterly inexplicable: the com- 

 bination amounts to proof for the theory. 



6. It is a complete theory, in that "the truly 

 psychical" is included and fully accounted for — 

 accounted for, that is, to the same extent to which 

 anything else may be said to be accounted for. (See 

 p. 151.) 



7. The theory calls in no unknown agencies. It 

 shows that there is absolutely no more need for 

 postulating pansperm, a peculiar "life-element," a 

 pre-existing soul, "life entities," etc., to account for 

 life and all life-phenomena than there was for the 

 many kinds of elementary "atoms" which the Greeks 

 postulated to account for matter. As a theory of life, 

 the theory is both sufficient and necessary. 



Further, it appears that certain rigid demands 

 which the theory makes, are met by answering facts 

 of observation. 



One of these demands is that given certain specific 

 conditions which beyond a doubt follow many in- 

 juries, inevitably a neoplasm, cancer or other growth, 

 must result. (See p. 181.) And surely, no critical 

 but impartial reader will underrate the significance, 



