When rightly exercised however, the spiritual unity of body, mind and soul, produces a vigorous pursuit of whatever is great and good in human nature. The Temperaments may be generally referred to some particular constitution of the organic system--whole families are sometimes of a similar temperament, and at others no two members are alike: a great portion probably depends upon parental causes, in the same way that family likenesses are often observed, probably they may be referred to the blood as a chief cause, the active circulation producing great action on the brain and nerves originating the _nervous_: a fulness of the circulating medium may produce the _sanguine_; a muscular developement the _bilious_; a sluggish system the _lymphatic_. The classification of the temperaments, and their combined influence upon the three-fold nature of man may be best understood from careful observation: when pure they present the following appearances;-- 1. A NERVOUS TEMPERAMENT is indicated by a pale complexion, features sharp and angular, delicate texture of the muscular system, fine silky hair, delicate health, quickness of perception and great susceptibility; persons under the influence of this temperament are very sensitive,--act more from impulse and feeling than from principle, and feel great languor when exhausted. 2. The LYMPHATIC TEMPERAMENT, is marked by a full fleshy outline,--round features,--pale complexion, light straightish hair,--pulse slow, muscles soft and the disposition lukewarm and indolent: the circulation being feeble, the mental manifestations are proportionately sluggish and weak. 3. The BILIOUS TEMPERAMENT is distinguished by dark hair, skin of a yellow hue and coarse angular features, eyes active, and often with a severe expression, the muscles firm and well developed;--the pulsations partake of great energy which extends also to the brain. 4. The SANGUINE TEMPERAMENT is evident from a clear florid complexion,--features well formed and fleshy,--the muscles full and tolerably firm, mild expression in the eye,--auburn or brown hair, eyes blue or sometimes hazel,--disposition lively and cheerful. These, with their combinations will produce all the common varieties, and where they are well united in a single individual the union generally improves the character. ON THE VARIETIES OF THE HUMAN RACE.