As has been stated, it is a fact that for each addict, a definite amount, varying with his condition of health, elimination, physical and mental activity, etc., meets a definite body-need. On this amount he can be put and kept in good physical and mental condition under normal circumstances of environment, exertion, and general hygiene. Years of efficient activity and upright responsible lives, accomplished by well-known men and women, unsuspected addicts, bear witness to this fact. An addict neither underdosed nor overdosed practically defies detection. Less than the definite amount required for nervous and glandular and circulatory support and organic balance deprives the patient of reaction, places his vitality and energy far below par and for a long time hinders his betterment. More than this amount displays the inhibitory effects of opiates, locks up or slows secretions and body functions, and causes malnutrition, autotoxemia, autotoxicosis, and the consequent mental and physical deterioration commonly and erroneously attributed to the direct action of opiate drug. In 1912 I wrote that so far as I knew the symptomatology attending insufficient supply of morphine (or other opiate) to an opiate addict had never received the amount of detailed study and analysis that it deserved and was not adequately interpreted. W. Marme had attributed the symptoms of morphine addiction to the toxic action of oxydimorphine. Rudolph Kobert, however, stated that Ludwig Toth subjected Marme’s claims to subsequent testing and was unable to confirm them, and that his own findings agreed with those of Toth. They found that oxydimorphine was inert by subcutaneous injection and that when thrown into the blood-stream it formed an insoluble substance causing emboli, and so producing the symptoms observed by Marme. Kobert seems to be in accord with the early findings of Magendie, that oxydimorphine is non-toxic. The experiments of Faust on dogs concerning increased power of the body to destroy morphine are well-known. It is still a matter of scientific dispute as to what extent the body of the opiate addict has developed the power to limit or destroy the poisonous properties of opiates by the conversion of these poisons through oxidation or other chemical action.