Mme.—Madame.
M. M. S.—Moravian Missionary Society.
M. M. S. S.—Massachusettensis Medicinæ Societatis Socius, Fellow of the Massachusetts Medical Society.
Mo.—Missouri; Month.
Mod.—Modern.
Mon.—Monday.
Mons.—Monsieur, Sir.
Mos.—Months.
M. P.—Member of Parliament; Member of Police.
M. P. P.—Member of Provincial Parliament.