FSC-10214- A GRAVITATIONALLY LENSED, HIDDEN QSO(4724 )

We present polarimetric evidence that the extraordinarily luminous gal axy FSC 10214+4724 harbors a hidden QSO. In polarized flux we see broa d emission lines of C III] lambda 1909, C IV lambda 1550, and Ly alpha /N v lambda 1240. The narrow emission lines that dominate the total fl ux spectrum are unpolarized. Recent images have indicated that FSC 102 14+4724 is actually gravitationally lensed, and we find strong evidenc e for Mg II lambda 2800 absorption at z = 1.316 in the spectrum of the QSO and weaker evidence for a possible continuum and absorption syste m at z = 0.893. Both of these systems could represent galaxies that co ntribute to the lensing.