- 1947Instructor In Biology
- 1948Instructor In Biology
- 1949Instructor
- 1952[position unknown]
- 1953[position unknown]
- 1954[position unknown]
- 1955[position unknown]
- 1956[position unknown]
- 1957[position unknown]
- 1958[position unknown]
- 1959[position unknown]
- 1960[position unknown]
- 1961[position unknown]
- 1962[position unknown]
- 1963[position unknown]
- 1964[position unknown]
- 1965[position unknown]
- 1966[position unknown]
- 1966Professor Of Biology
- 1967[position unknown]
- 1968[position unknown]
- 1969[position unknown]
- 1970[position unknown]
- 1971[position unknown]
- 1972[position unknown]
- 1973[position unknown]
- 1974[position unknown]
- 1975[position unknown]
- 1976[position unknown]
- 1977[position unknown]
- 1978[position unknown]
- 1979[position unknown]
- 1980[position unknown]
- 1981[position unknown]
- 1982[position unknown]
- 1983[position unknown]
- 1984[position unknown]
- 1985[position unknown]
- 1956Associate Professor