Robin Catalogue:
A. MS., G-undated-13, later than the Minute Logic, but before 1908, pp. 1-33, with g pp. of variants; pp. 10-31, with 7 pp. of variants.
Published, in part, as 7.49-52 (pp. 1-9). Unpublished: the meaning of “dynamical”; the distinction between relation and relationship; speculations on the survival of the human race and on the possibility of life - similar to human life - on other planets (pp. 10-33). The classification of the sciences, based upon the distinction between theoretical and practical science (pp. 10-31).

[Dated c. 1906 based on information given by Christian Kloesel]