Acknowledgements -- Preface -- Part I - Theory -- 0. Introduction -- 1. What Cognitive Semantics Is -- 1.1 Support For Cognitive Semantics From Other Disciplines -- 1.2. Case As A Semantic Entity -- 1.3. What A Cognitive Description Of Case Should Look Like -- 2. Cognitive Semantics Compared With Other Descriptions Of Case -- 2.1. Case Semantics In Previous Traditions -- 2.2. How The Cognitive Model Has Been Implied By Various Authors -- 2.3. Advantages Of The Cognitive Approach -- 2.4. An Ideal Description Of Case: Skalicka'S Challenge -- Part Ii - Analysis -- 3. Why The Czech Dative And The Russian Instrumental? -- 3.1. Schema 1 - Indirect Object -- 3.2. Schema 2 And Variants - Free Dative -- 3.3. Dative Network Bound By Syntagmatic Variants Of The Schemas -- 3.4. Reflexive Uses Of The Dative -- 3.5. Semantic Extension Via Mapping - Pragmatic Uses Of The Dative -- 4. Comparison Of Cognitive Networks - The Russian Dative -- 4.1. Schema 1 - Indirect Object -- 4.2. Schema 2 And Variants - Free Dative -- 4.3. Dative Reflexives -- 5. Analysis Of The Russian Instrumental -- 5.1. Conduit Instrumental - Schema 1 And Syntagmatic Variants -- 5.2. Schema 2 - Instrumental Of Setting -- 5.3. Attributive Instrumental -- 5.4. Instrumental Used With A Preposition -- 5.5. Instrumental Network Bound By Paradigm Of Peripherality And By Alliance -- 6. The Czech Instrumental -- 6.1. Conduit Instrumental -- 6.2. Instrumental Of Setting -- 6.3. Attributive Instrumental -- 6.4. Instrumental With A Preposition -- 7. Concluding Remarks And Possible Universals -- Notes -- References.