Die Entwicklungsfähigkeit des Eies vonBruchidius obtectus SAY nach partieller UV-Licht-Bestrahlung (Coleoptera) Emil Jung OriginalPaper Pages: 299 - 324
The “polarizing inducer” in hydra: A reexamination of its properties and its origin Werner A. MüllerKlaus-Dieter Spindler OriginalPaper Pages: 325 - 335
Pattern formation in longitudinal halves of leaf hopper eggs (Homoptera) and some remarks on the definition of “Embryonic regulation” Klaus Sander OriginalPaper Pages: 336 - 352
Studies on Synergism in Combinations of Anti-Tumour Agents in Chick Embryos B. A. DiwanB. K. Batra OriginalPaper Pages: 353 - 359
Die Ausbreitung der Melanoblasten bei den Embryonen verschiedenfarbiger Hühner Helga Eichelberg-SchumannEva Franzen OriginalPaper Pages: 360 - 366
Formation of chimeric patterns and segregation of cells in varied combinations of thorax forming imaginai disks ofDrosophila melanogaster H. ToblerH. R. Schaerer Short Communications Pages: 367 - 369