2· The interpretationTaken together with other evidence (see Hanuschik, these proceedings), class 1 profiles are likely to occur in an axisymmetric disk-like envelope in steady state. The typical shape and variability pattern of class 2 profiles, however,
The light-curve between 1964 and 1977 for the variable M2II giant HD 65750 = V341 Car is derived from 77 photographic and 83 photoelectric UBV measurements and analyzed. It is concluded that the light variations of the star are irregular and due to variable extinction in the circumstellar nebula. The appearence of the visible reflection nebula IC 2220 into which HD 65750 is embedded, has been found to vary on a time scale of four years.
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