1. Some observations on the fine structure of thyroids of hibernating and aroused bats

   • Hisao Fujita

   OriginalPaper Pages: 301 - 318

2. On the cavity receptor organ (X-organ or organ of Bellonci) of Artemia salina (Crustacea: Anostraca)

   • R. Elofsson
   • P. S. Lake

   OriginalPaper Pages: 319 - 326

3. Distribution of monoamine oxidase in the hippocampal region of the guinea pig

   • Finn A. Geneser-Jensen

   OriginalPaper Pages: 327 - 340

4. Tubular networks in the terminal endings of the visual receptor cells in the human, the monkey, the cat and the dog

   • Béla Lovas

   OriginalPaper Pages: 341 - 357

5. Elektronenmikroskopische Untersuchungen an menschlichen Leukozyten nach Osmium-Zink-Imprägnation

   • M. L. Ostendorf
   • H. R. Niedorf
   • S. Blümcke

   OriginalPaper Pages: 358 - 376

6. The organization of the insect visual system (Light microscopy)

   • N. J. Strausfeld

   OriginalPaper Pages: 377 - 441

7. The organization of the insect visual system (Light microscopy)

   • N. J. Strausfeld

   OriginalPaper Pages: 442 - 454