- Table des matières.- Catechine, andere Hydroxy-flavane und Hydroxy-flavene.- 1. Ältere Arbeiten.- 2. Die bekannten Hydroxy-flavane.- 3. Eigenschaften, Herstellung der Hydroxy-flavane.- 4. Kondensation durch Säuren.- 5. Hydroxy-flavene.- 6. Leucoanthocyanidin-hydrate, Acetate der Pseudoanthocyanidine und der Pseu doanthocyanidin-hydride.- 7. Oxydations- und Reduktionsübergänge in der C6C3C6-Reihe.- 8. Cyanomaclurin.- 9. Catechin-3-gallat und Catechin-3-glucosid.- 10. Stereochemie der Catechine.- 11. Biogenese der C6C3C6-Gruppe.- Recent Progress in the Chemistry of the Aconite-Garrya Alkaloids 26.- I. Introduction.- II. Garry a Alkaloids.- 1. The Structure of Veatchine and Garryine.- Environment of the Nitrogen.- Structure of the Skeleton.- Structure of the Oxoveatchine Dicarboxylic Acids.- Structure Assignment to Veatchine and Garryine.- 2. The Stereochemistry of the Garrya Skeleton and its Influence on the Properties of Garrya Alkaloids.- 3. The Structure of Cuauchichicine and Garryfoline.- 4. Configuration of the Secondary Hydroxyl Group in Veatchine and Garryfoline.- III. The Structure of Atisine.- Original Degradation Work on Atisine.- Similarity of Atisine with the Garrya Alkaloids and the Deduction of the Atisine Structure.- Some Confirmatory Evidence.- IV. Biogenesis of Veatchine and Atisine and Consideration of the Stereochemistry of Atisine.- V. The Structure of Ajaconine.- VI. The Structure of Napelline.- VII. The Chemistry of Hetisine.- VIII. Lycoctonine and Delpheline.- 1. The Chemistry of Lycoctonine.- Oxidation Studies.- Skeletal Changes.- 2. The Chemistry of Delpheline.- Environment of the Nitrogen.- Transformations in the Demethylene Series.- The Carbon Skeleton of Delpheline.- 3. Biogenesis of Lycoctonine and Delpheline.- IX. The Chemistry ofDelphinine.- References.- Structural Chemistry of Actinomycetes Antibiotics.- 1. Actidione (Cycloheximide).- 2. Actinomycins.- 3. Actithiazic Acid.- 4. Amicetin.- 5. Aureomycin (Chlorotetracycline).- 6. Aureothricin and Thiolutin.- 7. Azaserine.- 8. Chloromycetin (Chloramphenicol).- 9. Cycloserine (Oxamycin).- 10. Elaiomycin.- 11. Erythromycin.- 12. Etamycin (Viridogrisein).- 13. Magnamycin (Carbomycin).- 14. Methymycin.- 15. Mycomycin.- 16. Netropsin.- 17. Nocardamine.- 18. Novobiocin.- 19. Puromycin (Achromycin).- 20. Sarkomycin.- 21. Streptomycin.- 22. Terramycin.- 23. Tetracycline.- 24. Valinomycin.- References.- Protein Synthesis in Plants.- I. Introduction.- II. Isolation of Microsomes.- III. Structure of the Microsomes.- IV. Role of the Microsomes in Protein Synthesis.- V. Biology of the Microsomes.- 1. Nuclear Microsomes.- 2. Origin of Microsomes.- 3. Transfer of Microsomal RNA.- 4. Synthesis of the Microsomal Components.- 5. Kinetics of Microsomal Labeling.- VI. Protein Synthesis as a Catenary Sequence.- 1. Amino Acid Activation.- 2. Transfer to Soluble RNA.- 3. The Microsome as Acceptor of Amino Acid.- 4. Alternative Pathways of Peptide Synthesis.- VII. Protein Synthesis in Mitochondria and Chloroplasts.- VIII. Protein Synthesis in Varied Plant Organs.- 1. Developing Fruits and Seeds.- 2. Leaves.- IX. Conclusion.- References.- The Electron Gas Theory of the Color of Natural and Artificial Dyes: Problems and Principles.- I. Some Experimental Facts Concerning Color and Structure.- 1. Poly acetylenes, Polyenes, Symmetrical Cyanine Dyes, and Some Similar Compounds.- 2. Aza Derivatives of Symmetrical Cyanine Type Compounds.- 3. Acridine Type Bridge Formation in Symmetrical Cyanine Type Compounds.- 4. Some Other Types of Resonance Systems Causing Absorption of Visible Light.- II. Some General Principles and Postulates.- 1. Light Quanta and the Einstein-Bohr Frequency Relation.- 2. Wave Particle Duality of the Electron and the de Broglie Relationship.- 3. Standing Electron Waves. The Pauli Principle.- 4. The Chemical Bond; a and n Electron States.- III. Quantum Mechanical Determination of the Position of the Absorption Bands of Simple Dyes.- 1. A Simple Model of Symmetrical Cyanine Dyes.- 2. A Simple Treatment of the Aza Derivatives of Symmetrical Cyanine Type Compounds.- References.- Namenverzeichnis. Index of Names. Index des Auteurs.- Sachverzeichnis. Index of Subjects. Index des Matières.