One The Biosphere in the Cosmos. - The Biosphere in the Cosmic Medium. - The Biosphere as a Region of Transformation of Cosmic Energy. - The Empirical Generalization and the Hypothesis. - Living Matter in the Biosphere. - The Multiplication of Organisms and Geochemical Energy in Living Matter 6o. - Photosynthetic Living Matter. - Some Remarks on Living Matter in the Mechanism of the Biosphere. - Two The Domain of Life. - The Biosphere: An Envelope of the Earth. - Living Matter of the First and Second Orders in the Biosphere 103 The Limits of Life. - The Limits of Life in the Biosphere. - Life in the Hydrosphere. - Geochemical Cycles of the Living Concentrations and Films of the Hydrosphere. - Living Matter on Land. - The Relationship Between the Living Films and Concentrations of the Hydrosphere and Those of Land. - Appendix I: A Biographical Chronology. - Appendix II: Vernadsky's Publications in English. - Acknowledgments. Language: English