B. M.—Baccalaureus Medicinæ, Bachelor of Medicine.
Bost.—Boston.
Bot.—Botany.
Bp.—Bishop.
B. R.—Banco Regis or Reginæ, the King’s or Queen’s Bench.
Br.—Brig.
Brig.—Brigade; Brigadier.
Brig.-Gen.—Brigadier-General.
Brit. Mus.—British Museum.
Bro.—Brother.