CONTENTS 1. Magnetic Properties of Rare-earth Ferromagnets 179 2. Neutron-Diffraction Studies of the Magnetic Structure of Rare-earth Ferromagnets 183 3. Theory of the Helicoidal Magnetic Structure 184 4. Nature of Magnetic Phase Transitions in Rare-earth Ferromagnets 190 5. Antiferromagnetism of Metals of the Cerium Subgroup 191 6. Magnetoelastic Properties of Rare-earth Ferromagnets 193 7. Electrical and Galvanomagnetic Properties of Rare-earth Ferromagnets 198 8. Magnetic Properties of Rare-earth Alloys 202 Literature 206