Seven appointments to the teaching and research staff at the Harvard Medical School and the Harvard Dental School, effective immediately, were announced by the University today, as follows:

John B. Hazard, of Wellesley, Mass., as Assistant in Pathology; M.D. Harvard '30.

Mark S. Donovan, of Boston, Mass., as Assistant in Roentgenology; M.D. University of Michigan '35.

Luke Gillespie, of Winthrop, Mass., as Assistant in Obstetrics; M.D. Harvard '37.

Davio Acevedo, of Lima. Peru, as Research Fellow in Physiology; M.D. Faculty of Medicine of Lima, Peru '30.

Cemal Kiper, of Boston, Mass., as Research Fellow in Surgery, M.P.H. Harvard '40.

Francis Rouillard, of Cambridge, Mass., as Assistant in Obstetrics; M.D. Harvard '27.

Richard D. Garrett, of Glens Falls, N.Y., as Assistant in Oral Surgery; D.M.D. Harvard '39.

Stewart Y. McMullen, at present Assistant Professor of Accounting at North-western University, has been appointed a Visiting Lecturer on Accounting at the Harvard Graduate School of Business Administration effective June 1.