1. Ultrastructural changes in wheat embryos during a “presowing drought hardening” treatment

   • Nicos G. Marinos
   • David N. Fife

   Original Papers Pages: 381 - 396

2. Encystment ofBodo caudatus

   • B. E. Brooker
   • C. G. Ogden

   Original Papers Pages: 397 - 409

3. Über den Feinbau von Theka, Pusule und Golgi-Apparat bei dem DinoflagellatenGymnodinium spec.

   • E. Schnepf
   • G. Deichgräber

   Abhandlungen Pages: 411 - 425

4. Cell division in the marine slime mold,Labyrinthula sp., and the role of the bothrosome in extracellular membrane production

   • David Porter

   Original Papers Pages: 427 - 448

5. The occurrence of plasmodesmata-like structures in a non-division wall

   • J. Burgess

   Original Papers Pages: 449 - 458

6. On the water-soluble protein of sea urchin eggs and its changes during the early development

   • Reiji Hori
   • Yoshiko Hori

   Original Papers Pages: 459 - 463

7. Staining and osmotic properties of young gametophytes ofPolypodium vulgare L. and their bearing on rhizoid function

   • D. L. Smith

   Original Papers Pages: 465 - 479