Published, in part, as 7.77-78 (pp. 20-29). Unpublished: the place of logic among the sciences the fact that logic is a theoretical, not practical, science, even in respect to its methodeutic division (pp. 1-19). The relationship between logic and psychology, with CSP's opposition to the "psychological logicians" stated at some length (pp. 30-47).
Logic (modal see Modality), Logic and psychology, Logic and science, Methodeutic (see also Iogic Normative science), Psychology and logic, logic of Science
pp. 1-47, with 10 pp. of variants