as confront a person at every waking moment, rather than special classes, and not settling theoretical issues by special experiences or experiments (3) Idioscopy – the special sciences, about special classes of positive phenomena, and settling theoretical issues by special experiences or experiments Thus Peirce ends up framing two fields each of which is philosophy in a sense: cenoscopic philosophy which precedes the special sciences, and synthetic philosophy (that is to say, science of review), which does take advantage of the results of all the sciences of discovery and develops, for instance, classifications of the sciences. Peirce opens his 1903 classification (the "Syllabus" classification) with a concise statement of method and purpose: This classification, which aims to base itself on the principal affinities of the objects classified, is concerned not with all possible sciences, nor with so many branches of knowledge, but with sciences in their present condition, as so many businesses of groups of living men. It borrows its idea from Comte's classification; namely, the idea that one science depends upon another for fundamental principles, but does not furnish such principles to that other. It turns out that in most cases the divisions are trichotomic; the First of the three members relating to universal elements or laws, the Second arranging classes of forms and seeking to bring them under universal laws, the Third going into the utmost detail, describing individual phenomena and endeavoring to explain them. But not all the divisions are of this character.... The following table is based mostly on Peirce's 1903 classification, which was more or less the final form. But see after the table for discussion of his later remarks on the divisions of logic. Logic's divisions later In a piece which the Collected Papers editors called "Phaneroscopy" and dated as 1906, Peirce wrote (CP 4.9): Thus the three main 1903 departments of logic were now sub-departments of the study of the logic of symbols. In a letter to J. H. Kehler, printed in The New Elements of Mathematics v.3, p. 207 and dated 1911, Peirce wrote: There in 1911 Peirce does not mention the 1906 division into logics of icons, indices and symbols. Critic and Methodeutic appear, as in 1902 and 1903, as the second and third main departments of logic. Analytic is now the first department and the word "Stechiology" goes unused. He includes in Analytic the consideration of issues which, back in