The discovery of the real cause of a given case of Graves' disease is frequently difficult because it may be of a painful personal nature. Of extreme interest is the fact that, in the acute stage, the patient may be unable to refer to the exciting cause without exhibiting an exacerbation of the symptoms of the disease. I presume no case should be regarded as cured until reference can be made to its cause without an abnormal reaction. It has been established that in Graves' disease injury to any part of the body, even under inhalation anesthesia, causes an exacerbation of the disease. Fear alone may cause an acute exacerbation. These acute exacerbations are frequently designated "hyperthyroidism" and are the special hazard of operation. In applying the principle of anoci-association in operations on patients with Graves' disease there is scarcely a change in the pulse, in the respiration, or in the nervous state at the close of the operation. I know no remedy which can obviate the effect of the inflowing stimuli from the wound after the cocain[*] has worn off.[t] It is necessary, therefore, Beats 70 80 90 100 110 120 Ether ******* ******** ******** ******** ******** N2O ******* ******** ******** ******** * Anoci. ******* ******** ******** ** not to venture too far in serious cases. Since the adoption of this new method (anoci-association) my operative results have been so vastly improved that I now rarely regard any case of Graves' disease as inoperable, at least to the extent of contraindicating a double ligation (Fig. 17). [*] See footnote, page 4.@@@ [t] In later papers and in "Anoci-association" (Crile and Lower) methods of combating postoperative hyperthyroidism are fully discussed. If we believe that, in accordance with the law of phylogenetic association, a continuous stimulation of both the brain and the thyroid gland, accelerated by summation, plays a role in the establishment of the pathologic interaction seen in Graves' disease, then it is but the next step to assume that if the nerve connection between the brain and the thyroid be severed, or if the lobe be excised and the patient reinforced by a sojourn in a sanatorium or in some environment free from former noci-associations, he may be restored to normal health, provided that the brain-cells, the heart, or other essential organs have not suffered irreparable damage. There are still many missing links in the solution of this problem, and the foregoing hypotheses are not offered as final, although from the viewpoint of the surgeon many of the phenomena of this disease are explicable. Sexual-Neurasthenia