1. Cellular differentiation and morphogenesis in Cordylophora

   • Fred A. Diehl

   OriginalPaper Pages: 309 - 335

2. Auslösung von Situs inversus durch Materialdefekte im lateralen Ektoderm der Gastrula beiTriturus alpestris

   • Carl von Woellwarth

   OriginalPaper Pages: 336 - 340

3. The formation of the mesoderm in urodelean amphibians

   • P. D. Nieuwkoop

   OriginalPaper Pages: 341 - 373

4. Dedifferentiation of gland cells in hydra and further development of interstitial cells arising from them

   • Danica Žnidarić
   • Ante Lui

   OriginalPaper Pages: 374 - 383