1. Presidential address to the congress on the occasion of the foundation of a European association for research in the field of plant breeding

   • J. C. Dorst

   BriefCommunication Pages: 1 - 3

2. Development and organization of the breeding of agricultural crops in the Netherlands

   • J. C. Dorst

   OriginalPaper Pages: 4 - 10

3. Horticultural plant breeding in the Netherlands

   • O. Banga

   BriefCommunication Pages: 11 - 13

4. The development and organization of forest tree improvement in the Netherlands

   • H. Van Vloten

   OriginalPaper Pages: 14 - 17

5. Semi-lethality in hybrid offspring of wheat

   • J. G. TH. Hermsen

   OriginalPaper Pages: 18 - 25

6. Seven years experience with hybrid tomatoes

   • J. M. Andeweg
   • J. H. Ruyten

   OriginalPaper Pages: 26 - 37

7. Potato breeding in Russia — July, 1956

   • J. G. Hawkes

   OriginalPaper Pages: 38 - 44

8. The creation and maintenance of two spring barley varieties

   • Joh. Dros

   OriginalPaper Pages: 45 - 48

9. Report on the selection of a dwarfing rootstock for cherries

   • J. Floor

   OriginalPaper Pages: 49 - 53

10. Origin of the European cultivated carrot

    • O. Banga

    ReviewPaper Pages: 54 - 63

11. The development of the original European carrot material

    • O. Banga

    ReviewPaper Pages: 64 - 76

12. Variation in pathogenicity of the potato root eelworm (Heterodera rostochiensis woll.,) and its significance in potato breeding

    • J. M. Dunnett

    OriginalPaper Pages: 77 - 89

13. A new method of testing beans for anthracnose

    • A. C. v. d. Giessen
    • A. v. Steenbergen

    OriginalPaper Pages: 90 - 93

14. International collaboration in the study of varieties of lettuce

    • J. A. Huyskes
    • C. M. Rodenburg

    BriefCommunication Pages: 94 - 95

15. Reviews of books

    BookReview Pages: 95 - 96