I. Enumeration, in chronological order, of the four stages which compose the deduction of the first edition, and citation of the passages which represent each separate stage.
II. Detailed analysis, again in chronological order, of each successive stage, with exposition of the views which it embodies.
III. Examination of the evidence yielded by the Reflexionen and Lose Blätter in support of the above analysis.
IV. Connected statement and discussion of the total argument of the deduction.
I. Enumeration of the Four Stages
(1) First Stage: That of the Transcendental Object, without Co-operation of the Categories.—This stage is represented by[754]: (a) II. 3 (from beginning of the third paragraph to end of 3) = A 104-10; (b) I. § 13 (the entire section) = A 84-92 (retained in second edition as B 116-24). a discusses the problem of the reference of sensations to an object, b that of the objective validity of the categories. b is therefore transitional to the second stage.
(2) Second Stage: That of the Categories, without Co-operation of the Productive Imagination.—This stage is represented by: (a) I. [§ 14] (with the exception of its concluding paragraph) = A 92-4 (retained in second edition as B 124-7); (b) II. (the first four paragraphs) = A 95-7; (c) II. 4 (the entire section) = A 110-14.
(3) Third Stage: That of the Productive Imagination, without Mention of the Threefold Transcendental Synthesis.—This stage is represented by (a) III.β (from beginning of seventh paragraph to end of twelfth) = A 119-23; (b) III. α (from beginning of third paragraph to end of sixth) = A 116-19; (c) I. § 14 (Concluding paragraph) = A 94-5; (d) III.δ (from beginning of sixteenth paragraph to end of section preceding summary) = A 126-8; (e) S(ummary) (in conclusion to III.) = A 128-30; (f) III.γ (from beginning of thirteenth paragraph to end of fifteenth) = A 123-6; (g) I(ntroduction) (from beginning of section to end of second paragraph) = A 115-16; (h) § 10 T(ransitional to the fourth stage) = A 76-9 (retained as B 102-4).
(4) Fourth Stage: That of the Threefold Transcendental Synthesis.—This stage is represented by: (a) II. 1-3 (from opening of 1 to end of second paragraph in 3) = A 98-104; (b) II. (the two paragraphs immediately preceding a) = A 97-8.
II. Detailed Analysis of the Four Stages