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out charlatan began, and sometimes it almost seemed as if Dr. C himself had doubts on the same point, and misgivings as to his own authenticity. In any case, he relied heavily upon his own well-staffed laboratory and then on the days when bio-chemistry seemed to hold out brilliant and even immediate hopes for the solution of medical problems. I saw nothing wrong with this approach or with its peculiar process, particularly since Dr. C had had excellent training and was close enough to several of the groups prominent in fundamental research to understand something of the requirements of technique and equipment involved in a full class laboratory. As for that flickering shadow of unauthenticity which played over his reputation I saw it as attributable to this invariable boutonniere which struck some people as too dapper for the bedside.

First among the clinical problems which Dr. C hoped to solve was that brand of hypertension for which no cause could be discovered, known as "essential hypertension," and there was at