Robin Catalogue:
A. MS., n.p., [c.1907-08 or 18 months after “Prolegomena”], pp. 1-14; 14-32, with p. 25 missing (but with no break in the text); pp. 7-16 of another draft; plus 24 pp...
A. MS., n.p., [c.1903?], pp. 1-52 (p. 25 missing), with 11 pp. of variants.
Nominal and real definitions; definition of terms, e.g., “postulate,” “axiom,” “corrollary,” “theorem,” which are...