Sentence:  But by the light of Bichat and Bell's discoveries, we can see one way to a theory of a <WSD>Palingenesis</WSD> of man, in which the flesh and blood of St. Paul, the animal life of Bichat, is eliminated, and the pneumatical body or organic life, the "senso-motor" nervous system, as distinct from the mere ganglionic, is retained. 
Meaning of the word marked with <WSD> tags:  Spiritual rebirth through the transmigration of the soul.