Albuminoids

or Protein Compounds, a cla of bodies which are particularly a ociated with the living activity of plants and animals, Albumin and fibrin in blood; casein in milk; syntonin muscle; and vitellin in yolk of egg, are import a examples of a scries of substances which are similar in their ultimate chemical composition as suggest (Gerhardt) that they all contain an identical principle, which by its capability of a uming varied forms of aggregation or of a ociating itself with mineral substances, is able to give rise to many apparently diverse bodies.