With the recognition of a cardiac class for remediable military recruits after the elimination of the unquestionably unfit, the so-called constitutional cardiac neurotic presents an extremely difficult problem. We have attempted to study intensively fifty such cases taken from all varieties of military service-men deemed unfit for overseas duty and who, in contradistinction to the possible infectious and functional group, were selected because of the constitutional or pre-enlistment nature of their complaint. This so-called neurocirculatory asthenic who reports for military duty has not been subjected to the strain of early training, nor has he recently suffered severe infection. He has complained of cardiac distress for years. He is made of poor material that has been constantly irritated. His start in life is only fair at best, and therefore, with added external and internal irritation he becomes a poorly disciplined waster of nervous energy. This group is particularly susceptible to external