Of Flexion: 283. Of Ignoratio Elenchi: See 'I. E.' Of Irrelevant Evidence: 288. Of Mal-observa- tion: 393. Of Mentiens: 103, 182, 183. Of Negative Conclusion, Two Affirmative Premisses: 224. Of Ne- gative Premiss, Affirmative Con- clusion: 224. Of Non-observation : 391, 392. Of One Particular Pr., Universal C.: 224. Of Petitio Prin- cipii: See 'P. P.' Of ‘Post hoc ergo propter hoc': 377. Of Quaternio Terminorum : See 'Q. T.' Of Two Negative Premisses: 224, 233, 234, 258 (ftn.). Of Two Particular Pre- misses: 224. Of Undistributed Middle: See 'U. M.' Of Vicious Circle: 32, 34, 35.
False .: See 'Falsehood...' 'F. Analogy': 358, 362-364. 'F.' or Erroneous Hypothesis: 334, 336, 338, 339, 432. F. Parenthesis: 285. Falsehood, Falsity: 7, 93, 94, 99, 103, 104, 122, 141, 145, 306, 310, 393, 449, 454. Ignored by Formal Logic: 7-9, 157, 309, 310. F. in relation to Hypotheticals: 179, 180. To Time: 100-102. F. of Conclusion: 324, 325. Of Premisses: 214, 292, 295, 324, 325.
Faraday, Michael: 335, 337. Fatalistic Dilemma: 293.
Favourable Condition: 394. F. Fact,
F. Event, F. Instance: 391.
Feeling: 4, 82-85, 87, 392, 393. Right F.: 118.
Feeling-immediacy: 85. See 'Imme- diate Experience.' Felapton: 226, 227.
Ferio: 226, 235, 237, 242, 247, 248, 256.
Ferison: 226, 227.
Fermat, Pierre de: 333. Fermentation : 422-429.
Ferrier, James Frederick (Prof.): 77.
Fesapo: 226, 227, 237.
Formula of Division: 40, 72. Of Ex- tension: 72. Of Identity: 21, 96- 98. Of Intension: 72. Of the Dis- junctive: 132.
Formulation of Experience: 85. F. of Hypothesis: 304, 326, 411, 432, 436, 439 (see 'H.'). Of the Law of Ex- cluded Middle: 99, 100. Of the Principle of Non-Contradiction: 98. Foucault, Jean Bernard Léon : 336. Foundation: See 'Ground.'
Four Terms: See Quaternio Ter- minorum.'
Fourfold Scheme of Categorical Pro- positions: 147, 156, 159, 160, 190. Four-termed Arguments: 250, 251. Fowler, Thomas (Dr.): 274, 394, 397, 399.
Fragmentary Aspect of Reality: 4, 5, 23, 309. F. Thought: 106.
Free Choice: 127, 140. See 'Free- dom.'
Freedom: 4, 105, 120, 127, 140, 369, 459, 462.
Free-will: 105, 452. See 'Freedom.' Fresison: 226, 227, 237.
Fruitful Analogy: 362. F. Hypo- thesis: 313, 328, 337-339, 430, 431, 439. F. Postulate: 459.
Fundamental Concept: ix, 462 (see 'Freedom,' 'Reality,' 'Truth,' 'Ul- timate C.'). F. Forms of Syllogism : 227. F. Problems: 105.
Fundamentum Divisionis (or F. D.): 43-46, 51-56, 73-75, 148.
Galen, Claudius: 236.
Galileo, G. G.: 213, 313, 316, 338, 362. Garden, H. (the Rev.): 68. Gay-Lussac, Joseph Louis: 425. General Categorical: 131. G. Col- lective: 162 (ftn.). G. Class, Con- cept, Idea, Meaning, Name, Term: 19, 57 (ftn.), 72, 75, 80, 81, 88, 127 (see 'Class,' 'Genus'). G. Effect: 383, 384. G. Form of the Hypo- thetical: 141. G. Law: See 'L.' G. Maxim, G. Proposition, G. State- ment: 250, 299-303, 348, 422 (see 'Universal P.'). G. Truth: 351, 376, 450. G. Universal Judgment: 147 (ftn.).
Generality: 45, 52, 77, 88, 133, 385, 455. Šee 'General ...,' 'Generali- zation.'
Generalization: 21, 22, 88, 155, 299, 302-304, 326, 339-344, 349-352, 355, 357, 379, 385, 410, 411, 428, 450, 453-456. G. Instances: 351. G. of Concepts under Concepts: 341. Of Facts under Concepts: 340, 341. Of F.'s under Laws: 341-343. Of
Laws under Laws: 343. Of the Meaning of a Word: 14, 15. G. Proper: 351, 352 (Note).
Generic F. D.: See 'Unity of F. D.' G. Idea: See 'Genus.' G. Mark : 18-22. G. Universal Judgment: 147-148 (ftn.).
Genetic Definition: 29, 30, 34. G. Explanation: 461. G. Movement : ix. G. Order: 60, 61, 65. G. (or Developmental) Sciences: 58, 62 (see 'Science'). Genuine Exception: 421. See 'E.' Genus (Biological): See Animal,' 'Classification,' Plant.' G. (Log- ical): 17-22, 25, 27, 28, 32, 33, 35-40, 57, 61, 68, 79, 82, 89, 95, 120, 121, 127, 136, 159, 245 (see 'Division,' 'Summum G.'). Its Definition: 30, 35.
Geocentric Theory: 329, 330, 338. Geology: 51 (ftn.), 80, 314, 337, 374,
Geometrical Method: 409.
Geometry: 20, 25, 26, 29, 33, 34, 36, 40, 41, 52, 54-56, 87-89, 120, 127, 131, 137, 138, 152, 169, 170, 197, 245, 246, 274, 284, 306, 321-323, 329, 331, 349, 362, 369, 409, 447, 450, 454.
Gilbart, John William: 67, 231, 288. Given: 145. See Acceptance of Statement.'
Goal of Induction: 365-444. G. of Observation: 389. Goclenian Sorites: 255-260. Goclenius, Rudolphus: 255. Grades in Division: See 'Continued D.'
Granted: See 'Acceptance of State- ment.'
Grammar: 13,93. See 'Grammatical.' Grammatical Form: 382, 383. G. Structure: 116, 285, 286. G. Sub- ject: 116.
Gravitation, Gravity: 29, 141, 245, 246, 318, 332-334, 337, 342, 343, 371, 373-377, 387, 405, 408, 409, 432- 434, 436, 452, 456, 459.
Ground: 127-130, 168, 269, 291, 303, 321, 323, 327, 349, 363, 364, 370 (ftn.), 387, 410, 450, 456. G. of Elimination: 416-418. Of Ex- planation or Induction: 453, 456- 459. Of the Joint Method: 417. Of the M. of Agreement: 414, 417. Of the M. of Concomitant Varia- tions: 417, 418. Of the M. of Dif- ference: 414-417. Of the M. of Residues: 417, 418. Of Verifica- tion: 418.
Group: 154, 158, 162. See 'Class,' 'Continued Division.'
Growth: 460 (see 'Development '). G. of Meanings: 14-17. Guess: 313, 327 (ftn.), 361. See 'Conjecture.'
Guiding Conception, G. Idea, G. Prin- ciple: 329, 340, 420, 448, 458.
Hamilton, Sir William: 159, 160. Hamiltonian Scheme of Categorical
Propositions: 159-161.
Hansen: 428. H.: 178, 179.
Heat: 334, 374, 380, 388, 393, 394, 396, 405, 407, 414, 415, 440, 457. Hegel, G. W. F.: 2, 6, 14, 31, 75, 76, 96, 97, 107.
Hegelian School: ix. Heliocentric Theory: 330, 331, 338. Helmholz, Hermann L. F. von: 426. 'Here': 82, 84, 100, 101. Herschel, Sir John F. W.: 386. Heterogeneous Effect, Heteropathic E.: 375.
Heuristic function of Analysis: 361. Of Elimination : 422. H. Method:
397. H. Supposition : 327.
Highest Genus: See ‘Summum G.' Historical Method: 410.
History: 119, 410, 438.
Ho: 178, 179.
Höffding, Harald: 452. Hoffmann: 426. Ho
Homogeneous Definition: 33, 34. Η. Effect: 375, 376.
Horns of a Dilemma: 274, 292, 293. 'How': 342, 356, 357, 368, 369. Huygens, Christian: 333. Hydrostatics: 436.
Hypothesis: 99, 136, 204, 304, 313- 315,317, 321, 326-339, 348, 351, 352, 355, 356, 361, 367, 395, 396, 400, 403, 410, 411, 417, 419-443,
447-453, 456, 459 (see 'Develop,
ment of H.,' 'Modification of H.,' 'Rival H.es,' 'Verification'). H. of Causal Law: 455, 456. H. of Gravitation: See 'G.'
Hypothetical Assumption: 443. H. Explanation: See 'Hypothesis.' H. Inference, H. Syllogism: 263-271, 323-325, 385 (see 'Dilemma'). H. Judgment, H. Proposition, etc.: vii, 111-114, 133, 136-142, 370 (ftn.) (see 'Dilemma'). Its Opposition: 178-180. Its relation to Inference : 145, 146. To the Categorical: 138, 139, 141, 268 (ftn.). To the Dis- junctive: 113, 114, 138. H. Method: 410, 411, 420. H. Sorites: 270, 271, 319, 320, 325. H. status of Reality
and Truth in Formal Logic: 6-9. H. treatment of Truth and Falsity : 145, 146.
'I': 82-84. 'I can,' 'I cannot,' 'I must,' 'I ought,' 'I will': 127. I Proposition: 147-152, 155, 157, 159, 160, 162, 163, 169-172, 282. Its Conversion : 194, 195. Its Dia- gram: 151. Its relation to 0:156 (see 'Subcontrariety').
Idea: 94, 393, 394 (see Class,' 'Con- cept,' 'Guiding I.,' 'Ideas,' 'In- ductive I.,' 'Principle,' 'Regulative I.,' 'Supreme I.,' 'Working I.'). I. and Fact: 6, 9, 313, 314, 317, 318 (ftn.), 339, 343, 393.
Ideal: 62, 63, 84, 127, 419, 420, 462 (see Inductive I.,' 'Logical I.,' 'Unideterminism'). I. Construc- tion: 26, 29, 61, 87, 88, 321, 322. L. of Consistency: See 'C.' I. of Ex- planation: 448. Idealism: ix, 6, 24, 25, 77, 107.
Idealization of Experience or of Fact: 6, 340, 419.
Ideas: See Meanings.' I. as more or less elementary: 34. I. expressed in Language: 16-18, 23-25, 32. Fixed by Words: 13-16, 93. Not true or false: 94. Suggested by Words: 71. Their Association: 28, 29. Their Indefiniteness: 16.
Identification: 64, 69, 70, 97, 149, 158, 161, 218. I. of S and P: 122. Identity: 16, 21, 60, 95-98, 104, 106, 122-124, 126, 145, 146, 149, 150, 152, 187, 188, 194, 219, 220, 223, 250, 290, 304, 325, 327 (see 'Agree- ment,' 'Essential I.,' 'Material I.,' 'Principle of I.'). I. as determining Import: 146. I. in Difference: 96-98, 121-124, 128. I. of Cause and Effect: 382. Of Reasoning: 349. Of the Universe: 385.
Identity-import: 148,159 (ftn.), 239, 245. Identity-principle: 124, 223. See 'P. of I.'
Identity-relation between Sand P: 126, 146, 219, 220.
'If' in Hypotheticals: 145 (see 'HI Judgment'). 'If Pis true, then Qis true': 141, 145. 'If P, then Q': 141. If-clause: 112. See 'Antecedent.' Ignava Ratio: 293.
Ignorance: 77, 79, 129, 157, 158, 385, 413. Ignoratio Elenchi: 289, 291, 292. Ignotum per ignotius: 34. Illegitimate (or Unsound) Analogy:
359, 360, 363, 364. I. Explanation: 457. I. Hypothesis: 338 (see 'Bar- ren H.'). I. Inference: 141. See 'Invalid...'
Illicit Process: 219, 229 (ftn.). I. (P. of the) Major: 219, 225, 237, 238, 257, 258, 269. (Of the) Minor : 219, 225, 226. I. Proof: See 'Fallacies
Illusion of Contradiction: 105, 106 (see 'Apparent C.'). I. of Identity: 106.
Illustrations: See under subjects illus- trated.
Imagination: 71, 72, 246, 313, 317, 321, 328, 390, 459.
Immediacy: 85 (see 'Immediate...'). I. in Causal Connexion: 378, 381- 383, 427, 428.
Immediate Antecedent, I. Cause, I. Effect: See 'Immediacy in Causal Connexion.' I. Apprehension, I. Experience, I. Perception: 4, 75, 76, 82, 85, 340, 393. I. Inference: 185-209, 306. 'I. I. by Privative Conception': 190 (ftn.). 'I. Is' from Hypotheticals: 265, 266. I. Object: 85. I. Self-evidence: 84.
Immortality: 462. Imperative: 93, 94, 127, 168. Imperfect Disjunction: 137 (see 'Non- exclusive ..'). I. Enumeration : 347 (see 'Enumerative Induction'). I. Fi Figures: 247, 248, 324 (see Fig. . II., 'Fig. III.,' 'Fig. IV.') I. Inductions: 347, 351-364 (see Analogy,' 'Enumerative Induc- tion').
Impersonal conceptions of Truth and Reality: 4, 5. I. Judgment: 116. Implication: 35, 70, 71, 81, 94, 95, 112, 113, 123, 124, 148-151, 155-158, 165, 167, 168, 187-190, 229, 301, 304, 307, 321, 322, 326, 327 (see 'Im- port...'). I. in Apodeictic Hypo- thetical: 140, 142, 146. I. in Hypo- theticals: 139-142, 385. I. in Syllo- gism: 214, 223.
Implications of Disjunctives: See Import of the Disjunctive.' Implicit Assumption: 436-438, 458. I. Exhaustiveness: 46. I. Self- contradiction: 104.
Implied Common Nature: 115. I. Objective Reference: 94. I. Pro- perty: 26, 27.
Import: See 'Meaning,' 'Singular I.' Determined by Identity: 146. I. of Propositions: 94, 95, 99, 114, 115, 119, 123, 132 (ftn.), 145-148, 150, 155-159, 189, 190, 239-241, 244, 245 (see 'Attributive view of I.', Class-inclusion,' 'Coincidence-im- port, "Denotative Reading," ' ' Ex- istential I.,' 'Extension-i.,'' Formal I.,' 'Identity-i.,' 'Intensive Read- ing.' 'Predicative view of I.,'
'Statement-i.,' 'Truth-i.'). I. of 'Some': 157 (see 'S.'). I. of the Categorical: 146-161. I. of the Disjunctive: 132-137, 274. Of the Hypothetical: 138-142. Of the Par- ticular Proposition: 154-158. Of the Undistributed Term: 157 (see 'Some.'
Important Attribute, I. Character, I. Difference, I. Resemblance: 58-60, 62, 65, 327, 358-360. I. Circum- stance: 396, 403, 426. I. Condition: 370.
Impossibility: 131. Inaccuracy: 66, 295, 386, 432. Inadequate (or Incomplete) Division: 45, 46, 52-56. I. Knowledge: 129, 130 (see Limitation of K.').
Inclusion of Classes: See 'Class-i.' I. of Individuals in Classes: 43, 152 (see 'Class,' 'Individual'). Inclusive Idealism: 77. Incompatibility: 156, 364, 401, 443. See Compatibility.' Incomplete Dichotomy: 47. I. Di- vision: 'Inadequate D.' I. Enumeration: 43. I. Explanation:
Inconceivability: 449, 450, 452. Inconclusiveness: 281.
Inconsistency: 8, 9, 17, 76, 98, 99,
102, 106, 107, 139, 140, 150, 164. Increase of Determinate Connotation : 72.
Indefinability: 74, 76, 82, 84. See 'Definability.'
Indefinite Categorical: 113. I. Char- acteristic: See 'Indeterminate Ele- ments...' I. Judgment: 165 (ftn.). I. Proposition: 156. I. Species, I. (or Negative) Term: 47-52, 124, 190-192, 250. Its Symbol: 201. I. Subject: 116. I. Use of 'Some': 156-158, 175.
Indefiniteness: 16-18, 74, 157, 281. See 'Indeterminacy.' Independent Propositions: 166, 198, 199.
Indesignate Proposition: 128, 165, 147. Indestructibility: 387.
Indeterminacy: 89, 112, 113, 116. See 'Indeterminate...'
Indeterminate: See 'Indefinite...' I. Agreement: 20. I. Categorical : 131, 133. I. Concept, I. Conception, I. Meaning: 76-78, 88, 95, 121, 284, 285, 329. I. Elements in Definition : 20-22, 35, 41, 43, 44, 54, 71, 74, 75. I. Knowledge: 113. I. Subject- concept: 116, 121, 165 (ftn.). Indeterminism: 453. See 'Non-me- chanical...' Index: 63-65.
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Index-Classification: 64-66. Indication of Objects by Terms: 21 (ftn.), 80, 81, 86, 147, 161, 162 (ftn.), 218, 219. See Application of Meanings,' 'Objective Reference.' Indicative Sentence: 94, 167.
Indirect Moods: 236. I. Observation: 435. I. Proof: 237, 238, 324, 325. I. Reduction: See 'Reductio per Impossibile.'
Individual: 22-24, 40, 42, 43, 57, 63, 64, 66, 71, 72, 80-82, 85-88, 114, 115, 148, 149, 152, 157, 161-163, 165, 288, 299, 340, 352, 354, 356, 363, 455, 460 'Objects...,'
Singular Term'). Its Definability: See D. of Proper Names.' I. Characteristic: 371. I. Concept: 80 (see Singular C.'). I. Elements in Division: 47, 79, 80. I. (or Sub- jective) Intension: 70, 71. I. Na- ture: 81. I. Meaning: 80 (see
Singular Meaning ').
Individuality: 82, 85, 459, 460. I. of Reference: 80. See 'Singular Mean- ing.'
Individualization: 118.
Indivisibility: 79. See 'Divisibility.' Induction, Inductive Method, In- ductive Procedure, etc.: 3, 94, 122, 295, 301-303, 306 (ftn.), 311-462 (see Explanation,' 'Inductions,' 'Prin- ciple of Induction,' 'Scientific I.'). I. and 'Inductive Inference': 326, 327. I. and the Inductive Principle: 311-344. I. by Complete Enumera- tion: 356, 357. I. by Simple Enumeration: 347, 351-357, 454-456. Inductions improperly so-called: 344- 350 (see Colligation,' 'Parity of Reasoning,' "Perfect Induc- tion"'). I. properly so-called: 347 (see 'Imperfect I., Scientific I.'). Inductive Canons: See 'C. of Causal Methods.' I. Conception of Fact: 448. I. Conclusion: 416, 418. Ι. Criterion, I. Standard: 347, 348, 350, 355-357, 362, 456, 457. I. Ex- planation: 343, 368-370 (see 'E.,' Induction'). I. Hypothesis: 336 (see 'H.'). I. Idea: 318 (ftn.), 352, 390. I. Ideal: 420, 448. I. Inference': 299, 301, 303, 326, 327, 347-350. I. Inquiry, I. Method, I. Procedure, I. Process: See 'Induc- tion.' 'I. Instinct': 303. I. In- terest: 381, 421, 457. I. Logic: 326 (see 'Induction'). I. Methods 326, 356, 395-422, 455, 456 (see 'Method...'). I. Movement: 313. I. Postulate: 3, 338 (ftn.), 367, 368, 420, 445-462. I. P. and Deter- minism: 450-455. I. P. and I.
Principle: 449. I. Principle: ix, 3, 311-364, 367, 395, 448, 449 (see 'Fidelity to Relevant Fact'). I. Proof: 416, 454. I. Scheme: 347. I. Science: 313, 378, 379, 453. See 'Induction,' 'Science.'
Inference: 3 (ftn.), 7, 8, 114, 130, 141, 142, 146, 155, 167, 185-310, 318-327, 348, 349, 362, 368, 370 (ftn.), 385, 387, 409 (see 'Deductive I.,' 'For- mal I.,' 'Immediate I.,' "Induc- tive I.",' 'Invalid...,'' .,' 'Syllogism,' 'Validity'). I. as an Identity: 96. I. by Added Determinants: 208, 209. I. from Disjunctives: 133, 134 (see 'D. Syllogism'). I. from Par- ticulars to P.: 299, 300, 302. I. in relation to Hypothetical Form: 145, 146. I. of Consequent from Ante- cedent: 142 (see 'Apodeictic...'). Inferential Fallacies: 286 (see 'Formal Fallacy'). 'I. Possibility': 130. Infima Species : 42-44, 72-74, 77, 80, 88, 89 (see Continued Division '). Its Divisibility: 79, 89.
Infinite Regress: 103, 378. 'I. Term': 48, 49, 72 (see 'Indefinite Species'). Influencing Agent: 405. Infra-scientific Viewpoint: 4, 5. Inherent Force: 459, 460. Initiating Cause, I. Condition: See 'Exciting Cause.' Inner Standpoint: 453. Inorganic Fact, I. Phenomenon: 458, 459. I. Nature: 61 (ftn.). I. Order:
Inspection: 390. See 'Observation.' Instance: 114, 131, 157, 302-304, 327, 340, 348-362, 371, 383, 391-408, 412- 418, 421, 422, 425, 426, 439, 443, 449-451, 454-458. See 'Negative I.,' 'Positive I.'
Instantia Crucis: See 'Crucial In- stance.'
Integrity of Thought: 98. See 'Con- sistency.'
Intelligibility: 98, 104, 191, 452. I. of Experience, of Fact, of Reality, etc.: 78, 79, 99, 104, 139, 140, 458. I. of Statement: 99. Intelligible World: 105. Intended Meaning: 97 (ftn.). Intension: 21 (ftn.), 70-73, 80, 146, 147, 154. See Disjunctive De- velopment...,' 'D. Interpretation of I., Intensive...' Intensive Reading: 147, 148 (ftn.). Intent, Intention: 23, 24, 27, 28, 51 (ftn.), 97 (ftn.) See 'Purpose.' Interaction: 29, 341, 459, 460. Interconsistency: 7, 8, 9. See 'Con- sistency.'
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