Spectra of the Thermal and Stimulated Scattering of Light in the Wing of the Rayleigh Line.- I. Theoretical and Experimental Investigations of the Spectra of the Thermal and Stimulated Scattering of Light.- II. Apparatus and Methods Used in Investigations of the Spectra of the Thermal and Stimulated Scattering of Light.- III. Results of Investigations of the Spectrum of Light Scattered by Anisotropy Fluctuations in Liquids.- IV. Results of an Investigation of the Stimulated Molecular Scattering of Light.- Literature Cited.- Light Scattering Studies of the Propagation of Longitudinal and Transverse Hypersonic Waves in Liquids.- I. Some Theoretical and Experimental Investigations of the Molecular Scattering of Light in Liquids.- II. Method for Experimental Investigation of the Thermal Scattering of Light in Liquids.- III. Dispersion of the Velocity of Sound and the Absorption of Sound in Liquids.- IV. Transverse Hypersonic Waves in Low-Viscosity Liquids.- Literature Cited.- Stimulated Molecular Scattering of Light in Gases.- I. Theoretical and Experimental Investigations of the Spectra of Molecular Scattering of Light in Gases.- II. Method and Apparatus Used in Experimental Investigations of the Stimulated Molecular Scattering of Light in Gases.- III. Experimental Results of Spectroscopic Investigations of the Stimulated Brillouin Scattering in Gases.- IV. Experimental Results of Spectroscopic Investigations of the Nonlinear Electrocaloric Interaction of High-Power Light Pulses with a Gas.- Literature Cited.- Experimental Investigations of the Thermal and Stimulated Molecular Scattering of Light in Solutions in a Wide Range of Wavelengths.- I. Optical Heterodyne Methods and Some of Their Applications in Investigations of Molecular Scattering of Light.- II. Measurement ofthe Width of the Central Component of the Thermal Scattering Spectrum and Determination of Inter-diffusion Coefficients of Solutions of Acetone in Carbon Disulfide and of Bromoform in n-Propanol.- III. Thermal and Stimulated Brillouin Scattering, Velocity of Hypersound, and Dispersion of This Velocity in Aqueous Solutions of Tertiary Butyl Alcohol.- IV. Fine Structure of the Rayleigh Line and Temperature Dependence of the Velocity of Hypersound and of Dispersion of This Velocity near the Critical Solution Point of Triethylamine-Water Systems.- V. Stimulated Scattering of Light in Carbon Disulfide and in Solutions of Carbon Disulfide in Carbon Tetrachloride. Amplification of the R2-Line Radiation of a Ruby Laser by Four-Photon Interaction.- Literature Cited.