Historical name

Abbreviation for Théodore Turquet de Mayerne (1573-1655), was a physician who treated kings of France and England and advanced the theories of Paracelcus. In his manuscripts T.M. or simpy M. can refer to observations and/or experiments Mayerne conducted himself. 

Also see: http://artechne.hum.uu.nl/node/92381

Library / Place of Edition Title Source title Year
British Library [Mayerne Manuscript Ms Sloane 2052, f.29] [Mayerne Manuscript Ms. Sloane 2052]
British Library [Mayerne Manuscript Ms.Sloane 2052, f.5] [Mayerne Manuscript Ms.Sloane 2052]