1100. On Small Differences of Sensation (with J. Jastrow)
TS., G-1884-10, pp. 1-15, incomplete, with l p. (unnumbered) and 2 duplicates; plus a reprint (National Academy of Science, Vol. III, 1884, pp. 3-11), corrected by CSP.
Published as 7.21-35, with corrections from the reprint.

1101. Our Senses as Reasoning Machines
A. MS., n.p., n.d., pp. 1-5, incomplete, with 7 pp. of fragments and some logical and mathematical notes on versos of some of these pages.
Instinct and reasoning. Can machines be said to reason? CSP replies that they can't; they proceed only by a rule of thumb. Quasi-inferential processes of sense.

1102. [On Sensation]
A. MS., n.p., n.d., pp. 1-3; plus 1 p.
Each of our sensations has a quality of its own.

1103. Immediate Perception
A. MS., n.p., n.d., 6 pp.
Sir W. Hamilton's definition of "common sense" stated, with CSP's criticism added. Application to the theory of perception.

* 1104. On a New Class of Observations, suggested by the principles of Logic
A. MS., n.p., n.d., 5 pp.
Two metaphysical theories concerning sensation. CSP accepts the position that, although the differences between sensations can never be covered by a general description, indefinite progress toward such a description may be made.

1105. C. S. Peirce's Analysis of Creation and Analysis of Creation
A. MS., n.p., n.d., 10 pp. of several starts.
How can a modification of consciousness be produced? How can abstraction become a modification of consciousness? Abstraction combined with the manifold of sensation by means of expression. Expression as the first condition of creation. The necessity of expression. The regulation of language; the means by which meaning enters into language. Examples of the necessity of regulation.

1106. [Consciousness]
A. MS., n.p., n.d., pp. 1-12.
An attempt to define "consciousness." CSP recognizes three meanings of the word (excluding the nonphilosophical usage which occurs when a person who comes out of a faint is said to have recovered consciousness). The three meanings reflect the three categories: feeling (Firstness), effort (Secondness), and thought (Thirdness). In regard to the second mode of consciousness, CSP distinguishes the active species from the passive (or degenerate) species.

1107. [Forms of Consciousness]
A. MS., G-undated-9, pp. 1-16.
Published in entirety as 7.539-552.

1108. [Will-Reaction; Mind (Self, Ego)]
A. MS., n.p., n.d., 1 p. and 1 p.

1109. [Feeling, Reaction, Thought; Continuity]
A. MS., n.p., n.d., 5 pp.
Thought can be reduced neither to qualities of feeling nor reactions. It is characterized by generality and continuity. Generality of meaning as a special aspect of continuity.

1110. [The Threefold Division of Mind]
A. MS., Gundated-9, pp. 1-6, with a variant p. 5; plus 1 p.
Early draft of MS. 1107. Published, in part, as 7.540n8 and 7.541n9.

1111. [The Threefold Division of Mind]
A. MS., n.p., n.d., pp. 1-6.
Feeling, will, and knowledge. Each is analyzed in terms of the categories.

1112. [Fragment on Consciousness and Reasoning]
A. MS., G-undated-14, 3 pp.
Published in entirety as 7.553.

1113. [Fragment on Consciousness and Reasoning]
A. MS., G-undated-14, 4 pp.
Published, in part, as 7.554. Omitted: CSP's discussion of the aptness of a metaphor that he employed in the published part.

1114. [Fragment on Imagination, Sensation, and Muscular Reaction]
A. MS., n.p., n.d., 3 pp.; plus 1 p. of another draft.

1115. [Psychology and the Analysis of Feeling]
A. MS., n.p., n.d., 1 p.; plus 1 p. on the spatial continuity of feelings.

1116. Analysis of the Ego
A. MS., n.p., early, 11 pp., incomplete.
How does anything existent exist? Or, what are the conditions of subjectivity? Subject is what it is by virtue of an incarnation of a predicate. It is by quality that substance in general exists. Incarnation as a combination of carnification and materiafication.

1117. On Brain-Forcing
TS., n.p., n.d., 2 pp.
Introductory pages on the problem of how to develop a young brain, ripen the adult one, and preserve it in old age. CSP touches on the question of genius.

1118. [Fragments on the Question of Genius]
A. MS., n.p., n.d., 4 pp. and 5 pp.

1119. [Worksheets for Studies in Great Men]
A. MS., n.p., [c.1883], a model form and 50 of these forms which have been partially filled in.
An experimental project for a class in logic, devised by CSP while at Johns Hopkins. The printed forms require a good deal of data of which only a small percentage has actually been recorded. Notes on the versos of some of the forms.

1120.Materials for an Impressionistic List of 300 Great Men
A. MS., n.p., n.d., 8 pp.; plus over 250 pp. of fragments and scraps.
In addition to the list of three hundred men grouped under several headings (the first rank, provisionally admitted, doubtful, provisionally excluded), there are biographical notes, questionnaires, and other means and efforts to develop the "power of observation" through an impressionistic study of comparative biography.

1121. [Reasoning Power]
A. MS., n.p., n.d., pp. 5-20, incomplete.
The reasoning power of men in different ages. In addition, there are comments on the secundal system.

1122. [Announcement of a Lecture or Lectures on the Topic of Great Men]
A. MS., n.p., n.d., 2 pp.

1123. The Productiveness of the Nineteenth Century in Great Men
A. MS., G-1901-5b, pp. 1-32, with 8 pp. of variants and a typewritten copy.
Published, with a deletion, as 7.256-261 (pp. 1-11). Unpublished: greatness and natural endowments; greatness as a function of environmental factors. Application of the doctrine of chances to the problem of greatness. Great men in several fields of endeavor and in modern history. CSP contends that the greatest men are the most human of human beings, appearances to the contrary.

1124. [The Productiveness of the Nineteenth Century in Great Men]
A. MS., G-1901-5b, pp. 1-6, with 5 pp. of variants.
Published, in part, as 7.262-266 (pp. 1-6). Unpublished: CSP's division of the nineteenth century into four eras or generations.

1125. (Great Men of the XIXth Century) (Great Men XIXth C)
A. MS, n.p., n.d., pp. 1-17, incomplete, with rejected pp. 10, 11, 11, and 16.
Great men are potentially crushed by circumstances. The nineteenth-century man of science with his lifelong devotion to the truth stands as a model for the philosopher. Generally speaking, the nineteenth century is inferior to the eighteenth in production of great practical men.

1126. Common Charasteristics of the Great Men of the Past Century
A. MS., n.p., n.d., pp. 1-28, with 11 pp. of variants.
How one goes about estimating greatness in a man. The glory of the nineteenth century was its science. The spiritual conditions of nineteenth-century science exhibited in the scientist's devotion to the truth. Evaluations of the achievements of scientists in several fields. Political and artistic greatness also considered.

1127. [Preface to a Paper on Great Men in Science]
A. MS., n.p., n.d., 1 p.

1128. [Fragments on Nineteenth-Century Ideas]
A. MS., n.p., n.d., 10 pp.
In these fragments CSP argues against Dr. Osler's jocose law (men ought to be put to death at 60), by citing as counterexamples the work of Galton, Kelvin, and Mme. Curie. One of the pages bears the title, "A Brief Synopsis of C. S. Peirce's Principles of Philosophy." Apparently the first volume of the Principles was to have been a review of the leading ideas of the nineteenth century.

1129. [On the Nineteenth Century]
A. MS., n.p., n.d., pp. 1-9, with a rejected p. 1.
The influence of the nineteenth century was, on the whole, "hardening, narrowing, destructive of fine feeling." Division of the powers of the mind into feelings, knowing, and willing. CSP would substitute consciousness of reaction for willing and what he called "synthetic consciousness" for knowing.

1130. [On Intellectual Power]
A. MS., n.p., n.d., 4 pp.

1131. [On the Coincidence of Rainfall and Illiteracy]
A. MS., n.p., [c.1872], 2 drafts, 13 pp. (with corrections and additions by Zina Fay Peirce) and 17 pp. (not in CSP's hand).
See G-1872-3.

1132. [Intention, Resolution, and Determination]
A. MS., n.p., n.d., 1 folded sheet.

1133. An Attempted List of Human Motives (Motives)
A. MS., n.p., April 11, 1901, pp. 1-3; incomplete; plus 2 pp. of another draft. Restatement of the enumeration of ethical classes of motives in Popular Science Monthly of January 1901.

1134. An Attempted Classification of Ends (Ends)
A. MS., G-c.1903-1, pp. 1-6, incomplete.
A reworking of the Popular Science Monthly article of January 1901. Published in entirety as 1.585-588.