1. Investigations concerning the reproductive behaviour ofMollienisia “formos 4”

   • Henry Meyer

   OriginalPaper Pages: 329 - 366

2. On a differential sensitivity of the somatic tissues to the male sex hormone in two Br. Leg. × R. I. Hens

   • C. J. Bond

   OriginalPaper Pages: 367 - 371

3. Chromosome form and behaviour in tetraploidAconitum

   • A. Afify

   OriginalPaper Pages: 373 - 394

4. The chromosomes ofNeurospora crassa

   • Carl C. Lindegren
   • Siegfried Rumann

   OriginalPaper Pages: 395 - 404

5. Aberrant leaf width in polyploid oats

   • James Philp

   OriginalPaper Pages: 405 - 429

6. Further interspecificSaxifraga hybrids

   • E. M. Marsden-Jones
   • W. B. Turrill

   OriginalPaper Pages: 431 - 445

7. Directed heritable variations conditioned by euploid chromosome alterations

   • Dontcho Kostoff

   OriginalPaper Pages: 447 - 468

8. A cytological study of anF ₁ betweenPisum sativum andP. humile, and of some types from the cross

   • E. R. Sansome

   OriginalPaper Pages: 469 - 499

9. The influence of testis on sexual plumage in the domestic fowl

   • Alan W. Greenwood
   • J. S. S. Blyth

   OriginalPaper Pages: 501 - 508

10. Note on the chromosome numbers obtained from crosses with the “peculiar” aposporous type ofScolopendrium vulgare

    • I. Andersson-Kottö
    • A. E. Gairdner

    OriginalPaper Pages: 509 - 514

11. The occurrence of quadrivalents in certain diploid and tetraploidAvena hybrids

    • W. Ellison

    OriginalPaper Pages: 515 - 522

12. Contributions to the cytogenetics of forest trees

    • C. Syrach Larsen
    • M. Westergaard

    OriginalPaper Pages: 523 - 530

13. ALymantria-like case of intersexuality in plants (Oehlkers’ work) and its meaning for the theory of sex determination in plants

    • Richard Goldschmidt

    OriginalPaper Pages: 531 - 535