C. S. Peirce Manuscripts

Logic 67

6th, Other authors, without citing results of scientific psychology.

Logic 118

Of propositions, and both induces and icons as components of arguments.

Logic 127

Does not stand for Mr. Kindley's zeal life by virture of being so caused by his life that it could not have represented a life at all if Mr. McKinley's life had not caused it.

Logic 127

Is not time that it would not represent anything if McKinley's life had not caused it. It is an image of a life, of whoever may fit it; and this defines an icon.

Logic 133

He has indicated, or professed to indicate a symbol.

Section 1. Classification of the Sciences.

[*E.C. Richardson, in a little book on classification, quotes an assertion of Robert H[?] in the Presbytarian Review for 1886. VII [?], to the effect that that Comte plagiarized [?] system from [?] [?] and thus the idea of it came from one Dr Burdin, whom I never heard of.]

Auguste Comte it was, as far as I am informed, who first had the idea of arranging the sciences in a ladder, each leading to the next. From the point of view of logic, at least, this is decidedly the best arrangement; because, in order to prove one thing to be true, if one is to proceed beyond mere perceptual facts, it is necessary to assume the truth of something else, while to attempt to prove this something else by assuming the truth of the former proposition would be to complete a vicious circle. It does not very often happen that that there are two independent ways of proving the same thing; and when this does happen, one of those ways will usual be more satisfac tory or more fundamental than the other. When this is not so, it is to be presumed that time will show that both the general premises, or principles, are cases under one still more gen-

Logic II 36

Are generalized to their utmost limit.

Logic II 41

Constants of bodies.

Logic II 125

Subfamily 1. Physical Geography. Subfamily 2. Geology.

Sub Class 2. Psychognosy. Order I. Nomolgical Psychognosy.

Logic II 48

The definitions of Agassiz.