A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. I — John Stuart Mill — John Shaqi
A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. I
John Stuart Mill · en
7. Limitations of this last method 443
CHAPTER IX. _Miscellaneous Examples of the Four Methods._
§ 1. Liebig's theory of metallic poisons 449
2. Theory of induced electricity 453
3. Dr. Wells' theory of dew 457
4. Dr. Brown-Séquard's theory of cadaveric rigidity 465
5. Examples of the Method of Residues 471
6. Dr. Whewell's objections to the Four Methods 475
CHAPTER X. _Of Plurality of Causes; and of the Intermixture
of Effects._
§ 1. One effect may have several causes 482
2. --which is the source of a characteristic imperfection of
the Method of Agreement 483
3. Plurality of Causes, how ascertained 487
4. Concurrence of Causes which do not compound their effects 489
5. Difficulties of the investigation, when causes compound
their effects 494
6. Three modes of investigating the laws of complex effects 499
7. The method of simple observation inapplicable 500
8. The purely experimental method inapplicable 501
CHAPTER XI. _Of the Deductive Method._
§ 1. First stage; ascertainment of the laws of the separate
causes by direct induction 507
2. Second stage; ratiocination from the simple laws of the
complex cases 512
3. Third stage; verification by specific experience 514
CHAPTER XII. _Of the Explanation of Laws of Nature._
§ 1. Explanation defined 518
2. First mode of explanation, by resolving the law of a complex
effect into the laws of the concurrent causes and
the fact of their coexistence 518
3. Second mode; by the detection of an intermediate link in
the sequence 519
4. Laws are always resolved into laws more general than
themselves 520
5. Third mode; the subsumption of less general laws under
a more general one 524
6. What the explanation of a law of nature amounts to 526
CHAPTER XIII. _Miscellaneous Examples of the Explanation of
Laws of Nature._
§ 1. The general theories of the sciences 529
2. Examples from chemical speculations 531
3. Example from Dr. Brown-Séquard's researches on the
nervous system 533