Contents: Foreword; Macroscopic Quantum Mechanics of the Current-Biased Josephson Junction; Quantum Mechanics at the Macroscopic Level: Experiments on Josephson Junctions; Macroscopic Quantum Phenomena in SQUIDs; Quantum Coherence in a Superconducting Single-Electron Box; Magnetisation Reversal by Quantum Tunneling in Nanometer-Sized Particles and Clusters; Resonant Magnetisation Tunnelling in Molecular Magnets; Spin Tunnelling in Molecular Magnets; Solitons, Instantons and Mesoscopic Quantum Phenomena in Magnetism; From Microscopic towards Mesoscopic; Quantum State Engineering with Cold Trapped Ions; Theory of Bose-Einstein Condensation of Laser-Cooled Neutral Atoms; Collective Collapse of a Bose-Einstein Condensates; Tunnelling of Defects in Metals; Josephson-Junction Qubits and the Readout Process by Single-Electron Transistors; Continuous Weak Measurement of the Macroscopic Quantum Coherent Oscillations; Index.