THE POLARIMETRIC NATURE OF HD-108

V-band polarimetric observations of HD 108 were obtained during 1994 A ugust and September. This is the first time that the temporal polarime tric variability of this star has been investigated. Its percentage po larization and position angle vary randomly, and no evidence of its pr oposed binary nature is detected. The random variability is consistent with that seen for previously observed Wolf-Rayet stars and OB superg iants. Nightly variations do show some systematic behaviour consistent with the blob ejection model of Underhill & Fehey (1984). From the da ta it is estimated that the mass-loss rate resulting from blobs is sim ilar to 1 x 10(-5) M. yr(-1). The total mass-loss rate of the star is estimated to be similar to 1 x 10(-5) M. yr(-1). The stellar rotation rate is estimated to be V-rot similar to 400 km s(-1) with an inclinat ion of i < 20 degrees. The data are also interpreted in terms of pertu rbations occurring in an equatorial disc plus bipolar jets viewed equa torially (Underhill 1994). It is found that the perturbation mass-loss rate is about similar to 3 x 10(-7) M. yr(-1), giving a total mass-lo ss rate for the star of 13 x 10(-5) M. yr(-1). Both models are consist ent with HD 108 being an OB supergiant or of the class Ofpe/WR9.