Diatessaron A Harmony of the Four Gospels-Tatian

Described by Binet as a branch of psychology little known, he endeavoured in the following essay upon Micro-organisms, to show that psychological phenomena begin among the very lowest classes of beings; they are met with in every form of life from the simplest cellule to the most complicated organism. It is they that are the essential phenomena of life, inherent in all protoplasm. - Summary by leon harvey