How could the man have established the synchronism of pulse and respiration and synchronous tachypnoea and tachycardia? Why should he persist in this form of sport, since he had already been invalided? The family history was not especially suggestive (father albuminuric, died at 59; mother well, probably tuberculous). Scarlet fever at eight; occupation, tourneur. After four months of service there was gastric disorder followed by typhoid fever (despite vaccination, according to the patient). Convalescent leave at Paris, during which leave he had swollen legs and albuminuria. May, 1915, gastric difficulty; valvular lesion determined; examination; invalided. At home, a variety of complaints, for which treatment was unsuccessful. During further examination it was noted that in auscultation the head of the examiner was lifted, as if there were hypertrophy of the heart or an aortic aneurysm. The synchronism was less exact on December 2; 112 beats to 128 respiration. Was this man a simulator? Had he become the victim of his own enterprise? There was no evidence of simulation. It was a question of a monosymptomatic hysteria. Gaillard discontinued the _manière forte_ and undertook a softer treatment, but the _manière forte_ had caused the family to want to take him away. Perhaps they feared a too efficacious treatment. He then escaped observation. It is probable that the tachypnoea ceased during sleep. It was not so marked after the medical visit was over. Soldier’s heart. =Case 138.= (PARKINSON, July, 1916.) A corporal, 21, who had been a miner and entirely well up to enlistment in August, 1914, went to France in 1915. In June, came shortness of breath and palpitation on exertion; later, precordial pain (fifth space, between nipple and median line) and giddiness on walking. Like all cases of true so-called “soldier’s heart,” this soldier had no physical signs indicative of heart disease, yet reported sick for cardiac symptoms on exertion. In this particular case, as in about half of forty cases reported by Parkinson, there had been no disability in civil life. August, 1915, the soldier was admitted to the casualty clearing station, where the apex beat was found in fifth intercostal space internal to the left nipple line. The first sound was duplicated in all areas. The second sound was duplicated, though not loudly, at the base. After nine months’ treatment, this man went back to light duty with slight symptoms.