Various tests have demonstrated the limited mental capacity of the chronic alcoholic. Will power is greatly reduced and fatigability increased. Memory and attention are affected and falsification of the past may occur. The patient learns nothing new and forgets the important things. All productive efficiency is gone and interest is lost. Weakness of judgment and loss of memory capacity lead to delusion formation. These often take the form of ideas of jealousy. Delusions of persecution, poisoning or grandeur may appear from time to time. Frequently there are genuine hallucinations. Some cases terminate finally in mental enfeeblement. Emotional changes are common in the chronic drinkers. The alcoholic humor is characteristic. The capacity for taking things seriously has been lost and there is a tendency to undue levity, often with a marked feeling of self-satisfaction. Some individuals, however, become moody, irritable or dull. Occasionally anxious states appear, frequently with suicidal attempts. One of the common symptoms of this condition is an extraordinary irritability after drinking. This leads to quarrels, assaults and violence. Consideration for others is completely lost. These attacks are often followed by remorse. A prominent and significant feature of the disease is the marked moral deterioration. All affection for family and children may be lost. Selfishness is pronounced and the patient spends all of his money for drink. Sexual excitement is sometimes an important symptom. With all of this there is a constant craving for alcohol. The patients have no insight into their condition and attribute their headache and tremors to overexertion, etc. They always deny using much alcohol and are absolutely untruthful on this subject. Overwork necessitates drinking, or it only happens after a death in the family, etc. Will power deteriorates rapidly. These individuals often commit crimes and come into conflict with the law. Gastritis, cirrhosis of the liver and numerous other diseases complicate the situation. Dizzy spells and headaches are common, as well as tremors of the tongue and fingers. Neurotic involvements are noted, with anesthesias, hyperesthesias, paresthesias, and muscular atrophies as well as speech defects. Epileptiform attacks are not infrequent in chronic alcoholism, and were found in ten per cent of Kraepelin's cases. His investigations showed that eleven per cent of the beer drinkers in Munich had convulsions. Combinations of epilepsy and hysterical manifestations with chronic alcoholism are not at all unusual. Rybakoff found a hereditary taint in 66.6 per cent of his cases while Moli reported only forty-seven per cent. Heredity was found to be a factor in thirty-seven per cent of Kraepelin's Heidelberg cases and in seventeen per cent of those at Munich. He describes various pathological findings in chronic alcoholism. Meningitis with hemorrhagic membranes is common. The convolutions are atrophied and the ependyma of the ventricles thickened. Pigmentary deposits similar to those of senility are found in the cells and vessel walls. There is an increase of both neuroglia cells and fibres. Hemorrhages are occasionally found in the central gray matter.