1. The inheritance of the capacity for showing mutual aversion between mono-spore mycelia ofDiaporthe perniciosa (Marchal)

   • Dorothy M. Cayley

   OriginalPaper Pages: 1 - 63

2. Meiosis in diploid and tetraploidPrimula sinensis

   • C. D. Darlington

   OriginalPaper Pages: 65 - 96

3. Sterility and incompatibility in diploid and polyploid fruits

   • M. B. Crane
   • W. J. C. Lawrence

   OriginalPaper Pages: 97 - 107

4. Genetical experiments withSilene Otites and related species

   • W. C. F. Newton

   OriginalPaper Pages: 109 - 120

5. Linkage in the tetraploidPrimula sinensis

   • D. de Winton
   • J. B. S. Haldane

   OriginalPaper Pages: 121 - 144

6. Erratum

   • C. D. Darlington

   Erratum Pages: I - I