In the case referred to of Charlton Palmer, who was a man stricken in years, and “whose mind was the mind of a child, it was _therefore in that sense_ imbecility and inability to manage his affairs, which _constituted_ unsoundness of mind.” Here the imbecility and inability to manage, _did_ constitute the unsoundness: the words _therefore, in that sense_, evidently refer to his mind being “the mind of a child,” which is perhaps a mode of expression more familiar than accurate; as no one could properly infer, that the mind of a child was necessarily unsound. If the word unsoundness be particularly examined, and for that purpose we consult Dr. Johnson’s Dictionary, we shall find it employed in three different senses, but no one in which it implies any particular condition of mind:—the adjective unsound has a dozen different meanings, but none in the sense of vitiated intellect. From authority therefore we obtain no information. If we proceed to its derivation, we shall find that our Anglosaxon ancestors by the word SUND (whence our SOUND) meant precisely the Latin SANUS. UNSUND Anglosaxon, or unsound English, would therefore be of equivalent meaning with the Latin INSANUS. In those instances where the word unsound is used in our own profession, it designates something cognizable by the senses. An unsound tooth bears in its external character or internal feeling, sufficient evidence of its unsoundness. A fistulous sore may appear to be healed, but the skill of the surgeon can readily detect that it is unsound at the bottom: and both the dentist and the surgeon can give sufficient reasons, as the foundation of their opinion. Unsound doctrine, differs from that which is orthodox in certain particulars or essential points, which constitute its unsoundness.