Marmoreus tartarus, is a stone in man as hard as a marble.
Martath, or Martach is Letharge.
Mater metallorum is Quicksilver.
Materia saphirea is an homogeneal liquor, in which there is no offending matter.
Matrices rerum are Elements.
Maturativa are medicines that Chirurgeons use to ripen any aposteme.
Mechanopeotica is an invention of water-workes to carry waters by pipes into high places, or the like.
Melaones, or Meloes are Beetles that fly, and are of a golden colour, and being rubbed make a sweet smell; they are commonly found in Meadows in the moneth of May.
Melibæum is Copper.
Melissa is in Alchymie taken for Manna extracted out of the best hearbs.