Hunter McGuire OP000814
Sir Stephen Mackenzie (ca 1895) OP000815
Robert Tait McKenzie OP000824
Dr. R. Tait McKenzie (1911-09) OP000825
Otto Wilhelm Madelung (1926) OP000840
Thorvald Madsen OP000841
Wilhelm Manz (1911) OP000844
Professeur Pierre Marie OP000849
Cecil P. Martin OP000850
Heinrich Martius (1956) OP000851
Docteur Albert Mathieu OP000853
Theodore Turquet de Mayerne OP000859
Georg Meissner OP000868
Emanuel Mendel (1907) OP000869
D.J. Mendelejew (1907) OP000870