Vacuum-ultraviolet emissions following the dissociative excitation of ${\text{H}}_{2}\text{S}$ by electron impact at 100 eV incident energy have been measured. The absolute photoemission cross sections are presented over the wavelength range from 94 to 170 nm and the H, SI, or SII transitions producing the features identified. The measured cross section of the Lyman-$\ensuremath{\alpha}$ emission at 121.6 nm for an electron-impact energy of 100 eV is $(9.79\ifmmode\pm\else\textpm\fi{}0.67)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}18}\text{ }{\text{cm}}^{2}$. Excitation functions of the dominant H and SI emission lines are shown for electron-impact energies from threshold to 300 eV. We study the near-threshold region of the excitation functions and use the measured threshold energies to identify the dominant fragmentation channels.