1. Bally3 J. (1981) Ap J (submitted).
2. Bally, J. and Predmore, R. (1981) Ap J (in preparation).
3. Harvey, P. M., Campbell, M. F., Hoffman, W. F., Thronsen, H.A. and Gatley, I. (1979) Ap J 229, 990.
4. Snell, R. L. and Edwards, S. (1982) this volume, p. 173.
5. Lada, C. J. (1981) private communication.