In order to interpret correctly the experimental results obtained from ferrimagnetic resonance experiments, it is necessary to understand completely the multiplicity of lines that can be observed. Most of these lines have been shown [R. L. White and I. H. Solt, Jr., Phys. Rev.104, 56 (1956); J. E. Mercereau and R. P. Feynman, Phys. Rev.104, 63 (1956); L. R. Walker, Phys. Rev.105, 390 (1957)] to be higher order precessional modes which are quite well understood. There still exists, however, some uncertainty connected with the uniform precessional mode. The uniform mode is of most importance since it is for this mode that values of line widths,gvalues, and anisotropy constants are usually quoted in the literature. It can be distinguished experimentally from the higher order modes since (a) its intensity of absorption is proportional to the uniform component of the rf magnetic field over the sample and (b) its intensity decreases much less rapidly with diminishing sphere size than for the higher order modes. We have observed, however, that there are several lines possessing these characteristics of the uniform mode. The relative intensities of these lines are strong functions of both temperature and frequency, they have different anisotropy constants, and their separation decreases with sphere radius. Data exhibiting these properties will be presented for experiments on spherical single crystals of MnZn ferrites performed in the microwave frequency range of 8000–12 000 Mc. A discussion of several possible mechanisms that might give rise to this phenomena will be given.