1. A preliminary statement of the results ofMr. Houwink's experiments concerning the origin of some domestic animals

   • J. P. Lotsy
   • K. Kuiper

   OriginalPaper Pages: 1 - 50

2. 1. The origin of the seed-plants (spermophyta)

   • D. H. Scott

   OriginalPaper Pages: 51 - 60

3. Das Genotypische Verhältnis Zwischen dem Wilden Linum Angustifolium und dem Kulturlein, Linum Usitatissimum

   • Tine Tammes

   OriginalPaper Pages: 61 - 76

4. A pecular eye-color among malamute-dogs

   • J. P. Lotsy

   BriefCommunication Pages: 77 - 78

5. Boekbespreking

   BookReview Pages: 79 - 96