1. Language and misleading questions

   • L. Susan Stebbing

   Articles and Discussions Pages: 1 - 6

2. The diverse definitions of probability

   • Maurice Fréchet

   Articles and Discussions Pages: 7 - 23

3. Relations between Logical Positivism and the Cambridge School of Analysis

   • M. Black

   Articles and Discussions Pages: 24 - 35

4. The conceptual focus of some psychological systems

   • Egon Brunswik

   Articles and Discussions Pages: 36 - 49

5. Über die semantische und die Objekt-Auffassung von Wahrscheinlichkeitsausdrücken

   • Hans Reichenbach

   Articles and Discussions Pages: 50 - 68

6. Die Entstehung des Kausalgesetzes aus dem Vergeltungsprinzip

   • Hans Kelsen

   Articles and Discussions Pages: 69 - 130

7. Esthetics and the theory of signs

   • Charles W. Morris

   Articles and Discussions Pages: 131 - 150

8. Über die Wahrscheinlichkeit von Hypothesen

   • Hilda Geiringer

   Articles and Discussions Pages: 151 - 176

9. Henry Schultz

   • J. Tinbergen

   Articles and Discussions Pages: 177 - 181

10. Reviews of books

    • R. Carnap

    Reviews Pages: 182 - 190

11. Books received

    Legacy Pages: 187 - 190

12. First information

    Fifth International Congress for the Unity of Science Pages: 191 - 192

13. La relativite de la logique

    • Louis Rougier

    Articles and Discussions Pages: 193 - 217

14. Reflexions on logic and language

    • Jørgen Jørgensen

    Articles and Discussions Pages: 218 - 228

15. Principia genetica grundbegriffe und grundtatsachen der vererbungswissenschaft

    • Alfred Heilbronn
    • Curt Kosswig

    Articles and Discussions Pages: 229 - 252

16. Register

    Legacy Pages: 253 - 255

17. Bemerkungen zur Hypothesenwahrscheinlichkeit

    • Hans Reichenbach

    Articles and Discussions Pages: 256 - 260

18. Reviews of books

    • R.V Mises

    BookReview Pages: 261 - 263

19. Second information

    Fifth International Congress for the Unity of Science Pages: 263 - 264

20. Was ist logische analyse?

    • Friedrich Waismann

    Articles and Discussions Pages: 265 - 289

21. Über den gegenwärtigen Stand der empirischen Begründung der allg. Relativitätstheorie

    • E. Finlay Freundlich

    Articles and Discussions Pages: 290 - 313

22. Über die Begriffe der psychischen Gesundheit und Erkrankung

    • Walter Hollitscher

    Articles and Discussions Pages: 314 - 351

23. Zu “Bemerkungen zur Hypothesenwahrscheinlichkeit”

    • Hilda Geiringer

    Articles and Discussions Pages: 352 - 353

24. Empirische Sätze und logische Konstanten

    • Bela Juhos

    Articles and Discussions Pages: 354 - 360

25. Die mathematische Logik des Arnold Geulincx

    • Karl Dürr

    Articles and Discussions Pages: 361 - 368

26. Third information

    Fifth International Congress for the Unity of Science Pages: 369 - 371

27. Reviews of books

    • Olaf Helmer
    • M. Strauss
    • Alexander Herzberg

    Reviews Pages: 372 - 383

28. Books received

    Legacy Pages: 384 - 385

29. Unified science and value

    • Heinrich Gomperz

    OriginalPaper Pages: 386 - 391

30. Logische oder metaphysische interpretation der logistik?

    • J. Kraft

    OriginalPaper Pages: 392 - 396

31. Mathematical constructs in psychology and sociology

    • Kurt Lewin
    • Karl Korsch

    OriginalPaper Pages: 397 - 403

32. On meaning

    • Hans Reichenbach

    BriefCommunication Pages: 404 - 405

33. Schröder's anticipation of the simple theory of types

    • Alonzo Church

    OriginalPaper Pages: 406 - 410

34. Empiricism and the unity of science

    • Jørgen Jøgensen

    OriginalPaper Pages: 411 - 417

35. The task of biology

    • Kurt Goldstein

    OriginalPaper Pages: 418 - 423

36. Causality and retribution

    • Hans Kelsen

    OriginalPaper Pages: 424 - 429

37. The social sciences and unified science

    • Otto Neurath

    OriginalPaper Pages: 430 - 433

38. The significance of epistemic correlations in scientific method

    • F. S. C. Northrop

    OriginalPaper Pages: 434 - 437