1. Wilhelm Roux and the rest: Developmental theories 1885–1895

   • Klaus Sander

   Essay Pages: 297 - 299

2. Heat induced developmental uncoupling of mesoderm from ectoderm and endoderm germ layer derivatives during Artemia postembryonic segmentation

   • Arantxa Hernandorena
   • Roberto Marco

   Original articles Pages: 300 - 305

3. Use of a cytoplasmically localised P-lacZ fusion to identify cell shapes by enhancer trapping inDrosophila

   • Hazel K. Smith
   • Cahir J. O'Kane

   OriginalPaper Pages: 306 - 311

4. Expression of exogenous DNA during the early development of the chick embryo

   • Margaret Perry
   • David Morrice
   • Helen Sang

   OriginalPaper Pages: 312 - 319

5. Localized activity of Ca²⁺-stimulated ATPase and transcellular ionic currents during mesoderm induction in embryos ofLymnaea stagnalis (Mollusca)

   • Danica Zivkovic
   • Robbert Créton
   • René Dohmen

   OriginalPaper Pages: 320 - 329

6. Morphological markers of anteroposterior and dorsoventral polarity in developing oocytes of the hymenopteranCosmoconus meridionator (Ichneumonidae)

   • Szezepan M. Biliński

   OriginalPaper Pages: 330 - 335

7. Necessity of protein synthesis for metamorphosis in the marine hydroidHydractinia echinata

   • Michael Kroiher
   • Michael Walther
   • Stefan Berking

   OriginalPaper Pages: 336 - 341

8. Experimental change of cytoplasmic composition can convert determination of blastomeres inPlatynereis dumerilii (Annelida, Polychaeta)

   • Adriaan W. C. Dorresteijn
   • Pia Eich

   OriginalPaper Pages: 342 - 351

9. Acknowledgement to referees

   Acknowledgments Pages: 353 - 353