On the basis of the intensity of these vasomotor disorders, Babinski felt that, in accordance with his general ideas, he was not dealing with hysteria, and that he was in fact dealing with the so-called physiopathic syndrome. Lacking for this syndrome was the exaggeration of the tendon reflexes of the affected limb. Might it not be that the improper attitude and muscular stiffness of the limb were based simply on retractions of tendons? The patient was chloroformed. This procedure was the more warrantable as a number of physicians had thought of the patient as an exaggerator or even as a simulator. Under chloroform there was in fact a slight tendon retraction; yet on the whole it was clear that the attitude and stiffness of the limb were largely dependent upon a contracture. When during narcosis all the other tendon reflexes and skin reflexes had become extinct, there was still to be observed on the affected side a hyperreflexia, and even a clonus of the patella; and the clonus lasted an hour after recovery from the anesthetic. This curious phenomenon of elective exaggeration of tendon reflexes in narcosis, Babinski has observed to be not infrequent. It is a valuable diagnostic sign for a sure proof of excess tendon reflexes in cases where doubt prevails under ordinary circumstances. Sometimes the contracture will yield, but only in the deepest sleep, outlasting even the conjunctival reflex and the reactions to pricking of the normal extremities. Moreover, the contracture would return from 20 to 25 minutes before any manifestation of consciousness. If an endeavor was made to reduce the contracture under full anesthesia and in complete unconsciousness, a spasmodic movement was provoked which exaggerated the abnormal attitude of the limb. Sometimes even the leg would be thrown into flexor contracture. The case above described was the one which led Babinski to his new formula of the PHYSIOPATHIC SYNDROME. This he describes in general terms as follows: