1. The cultivation and predator-prey relationships Chænæ vorax and Cyclidium sp.

   • Helen C. Greenblatt
   • Donald L. Perkins

   OriginalPaper 01 May 1975 Pages: 351 - 358

2. Oxygen consumption and respiratory behaviour of three Nile fishes

   • A. M. Abdel Magid
   • M. M. Babiker

   OriginalPaper 01 May 1975 Pages: 359 - 367

3. Hatching of the Anostracan Branchiopod Chirocephalus diaphanus Prévost I. Osmotic processes and the possible role of glycerol

   • R. E. Hall
   • L. J. MacDonald

   OriginalPaper 01 May 1975 Pages: 369 - 375

4. Hatching of the Anostracan Branchiopod Chirocephalus diaphanus Prévost II. The role of embryonic movements

   • A. N. Khalaf
   • R. E. Hall

   OriginalPaper 01 May 1975 Pages: 377 - 390

5. Toxicity of zinc to schistosoma Mansoni Cercariae in a Chemically Defined Water Medium

   • John A. Mecham
   • Rhodes B. Holliman

   OriginalPaper 01 May 1975 Pages: 391 - 404

6. Distribution of the Family Hydropsychidae (Trichoptera) in the Savannah River Basin of North Carolina, South Carolina and Georgia

   • A. Elizabeth Gordon
   • J. Bruce Wallace

   OriginalPaper 01 May 1975 Pages: 405 - 423

7. Die rezente Verbreitung der Flusskrebse in Hessen (Decapoda: Astacidae)

   • Jürgen H. Jungbluth

   OriginalPaper 01 May 1975 Pages: 425 - 434

8. Phytoplankton biomass and primary productivity of of Lake Leake and Tooms Lake, Tasmania

   • R. L. Croome
   • P. A. Tyler

   OriginalPaper 01 May 1975 Pages: 435 - 443

9. The Quantitative Importance of the Benthic Microfauna of an Arctic Tundra Pond

   • Tom Fenchel

   OriginalPaper 01 May 1975 Pages: 445 - 464

10. Die Sukzession der Testaceen-Assoziationen (Protozoa, Rhizopoda) im rezenten und subfossilen Sphagnum des Obersees bei Lunz (Niederösterreich)

    • H. Laminger

    OriginalPaper 01 May 1975 Pages: 465 - 487

11. Eléments d'observation sur la cinématique, la dynamique et l'énergétique de la locomotion dans le courant chez une larve de Trichoptère à fourreau

    • Michel Bournaud

    OriginalPaper 01 May 1975 Pages: 489 - 513

12. Some biometrical, ecological, morphological and distributional aspects of Chaetognata

    • Demetrio Boltovskoy

    OriginalPaper 01 May 1975 Pages: 515 - 534

13. A preliminary biological survey of Lake Nubia

    • Y. B. Abu-Gideiri
    • M. T. Ali

    OriginalPaper 01 May 1975 Pages: 535 - 541

14. Libri novi

    BookReview 01 May 1975 Pages: 542 - 542