The ratio of the neutron-capture cross section to the fission cross section (α) for U235 has been measured for incident neutron energies from 12 to 690 keV by a large gadolinium-loaded liquid-scintillator technique. Additional measurements at 30 and 64 keV were made by a method employing a liquid scintillator and a fission chamber. The experimental values of α can be approximately described by a linear decrease from 0.374 at 10 keV to 0.177 at 210 keV followed by a less rapid linear decrease to 0.095 at 700 keV. The results of these experiments are consistent and in reasonable agreement with other reported values of α in this energy range.