The same circumstellar material that produces infrared excesses in stars will, in the case of favorable geometry and optical depth, give rise to linear polarization at optical wavelengths by scattering of the stellar radiation. Such intrinsic stellar polarizations may be distinguished from the interstellar component by time variability, by a wavelength dependence unlike that of interstellar polarization, and/or by a strong rotation of polarization position angle with wavelength. With the exception of white dwarfs, few if any examples of intrinsic polarization in the absence of an infrared excess are known. The scattering material around early-type stars generally manifests itself as an ionized gas which produces optical line emission and free-free electron radiation in the infrared; for cooler objects the circumstellar scattering and infrared emission is due primarily to solid dust grains. Within current observational limits the circumstellar infra-