- 1901Professor Of Biology
- 1925Assistant In Biology
- 1922Instructor
- 1925Professor Of Biology
- 1922[position unknown]
- 1922Professor Of Biology
- 1920[position unknown]
- 1921[position unknown]
- 1922[position unknown]
- 1923[position unknown]
Preserving and communicating the history of science at the MBL