1. Contributions to the genetics of Tenebrio molitor L.

   • J. J. Schuurman

   OriginalPaper Pages: 273 - 355

2. Interspecific hybridization in the genus Hibiscus

   • E. I. Ustinova

   OriginalPaper Pages: 356 - 366

3. Studies on polyploid plants XIV

   • D. Kostoff
   • N. Arutiunova

   BriefCommunication Pages: 367 - 369

4. A comparison of the frequency of induced mutations in drosophila simulans and in its hybrid with D. Melanogaster

   • M. L. Belgovsky

   OriginalPaper Pages: 370 - 386

5. Die Untersuchungen über die Krebsvererbung mittels der Methode der Impetumoren

   • St. Konsuloff

   OriginalPaper Pages: 387 - 392

6. Researches on development of the flower in hemp whose sex has been changed under the influence of photoperiodism

   • L. Breslavec

   OriginalPaper Pages: 393 - 412

7. A case of intrachromosomal translocation of an active section into the inert part in Drosophila melanogaster

   • R. Masing
   • Iwan Sokolow

   OriginalPaper Pages: 413 - 422

8. The cytology of the male sterile lathyrus odoratus

   • A. C. Fabergé

   OriginalPaper Pages: 423 - 430

9. On the manner in which the disposition to carcinoma of the mammary gland is inherited in mice

   • A. L. Hagedoorn

   BriefCommunication Pages: 431 - 433

10. The nature of recessive genes and the Biomechanic theory of inheritance

    • A. L. Hagedoorn

    OriginalPaper Pages: 434 - 445

11. Errata concerning: R. Ruggles gates, 1936, recent progress in blood group investigations. Genetica XVIII, p.47–65

    • Paul Julien

    Erratum Pages: 446 - 446

12. A statistical study of flower doubling in Eschscholtzia Californica Cham

    • A. V. Beatty

    OriginalPaper Pages: 447 - 464