From the Robin Catalogue:
A. MS., G-c.1885-1, pp. 1-39, incomplete, with a variant p. 8.
Published, in part, as 1.369-372 and 1.376-378. Unpublished (pp. 20-24; 33-39): If the three categories are connected with reasoning, they must be present in the mind as innate ideas when reasoning first takes place. The three mental faculties corresponding to the three categories of logic are feeling, volition, and cognition. The three elements of consciousness must be capable of physiological explanation. Speculation as to whether the cell may contain all the fundamental elements of the universe.

Published as W 5:242-247.