The results are given of a systematic series of calculations on the coefficients of reflection and transmission for plane waves incident on elastic interfaces. Tables are given for the amplitudes of the reflected and transmitted longitudinal and transverse waves, for the intensities of these components, and for the fractions of the incident energy carried away by them. For incident longitudinal waves calculations were carried out for angles of incidence between 0 and 30 degrees with 5 degrees intervals. For incident transverse waves polarized in the plane of incidence results are given for four angles of incidence up to approximately 16 degrees . For incident transverse waves polarized normal to the plane of incidence the calculations were carried through for all angles of incidence--in steps of 5 degrees --up to total reflection. All the calculations were carried through for interfacial density ratios of 0.7 to 1.3 in steps of 0.1, and interfacial velocity ratios between 0.5 and 2.0 in steps of 0.25.