  We present the discovery of OB type absorption lines superimposed to the
emission line spectrum and the first double-lined orbital elements for the
massive Wolf-Rayet binary HDE 318016 (=WR 98), a spectroscopic binary in a
circular orbit with a period of 47.825 days. The semiamplitudes of the orbital
motion of the emission lines differ from line to line, indicating mass ratios
between 1 and 1.7 for M_WR/M_OB.
