1. Nachruf

   • R. Nöthiger

   Announcement Pages: I - VI

2. Spermatogenesis in larval testes ofDrosophila hydei, cultured in vivo

   • Elisabeth Rungger-Brändle

   OriginalPaper Pages: 79 - 91

3. Studies on the yolk granules of the silkworm,Bombyx mori L.: The morphology of diapause and non-diapause eggs during early developmental stages

   • Sachiko Takesue
   • Hiroomi Keino
   • Katsuhiko Endo

   OriginalPaper Pages: 93 - 105

4. Isozymic patterns and functional states of cell lines ofDrosophila melanogaster cultured in vitro. II

   • A. Debec

   OriginalPaper Pages: 107 - 119

5. Fibroblast cultures and dermatoglyphics: The topology of two planar patterns

   • Tom Elsdale
   • Frances Wasoff

   OriginalPaper Pages: 121 - 147

6. Levels of RNA polymerase activities during growth, encystment and germination ofPhysarum polycephalum

   • Armin Hildebrandt
   • Helmut W. Sauer

   OriginalPaper Pages: 149 - 156