Sir Stephen Mackenzie (ca 1895) OP000815
Robert Tait McKenzie OP000824
Dr. R. Tait McKenzie (1911-09) OP000825
Otto Wilhelm Madelung (1926) OP000840
Wilhelm Manz (1911) OP000844
Professeur Pierre Marie OP000849
Heinrich Martius (1956) OP000851
Docteur Albert Mathieu OP000853
Theodore Turquet de Mayerne OP000859
Emanuel Mendel (1907) OP000869
D.J. Mendelejew (1907) OP000870