Since the monumental work of Aub and his co-workers1 on lead poisoning, all reports of cases seem dwarfed into insignificance. However, the following reasons justify the case herewith published: Good results were obtained from mobilization treatment. "Deleading" resulted in a syndrome similar to tetany on two occasions, in each of which intravenous administration of calcium was immediately and spectacularly effective. The case was not associated with hypertension. REPORT OF A CASE History. —L. H., aged 48, a plumber, complained of inability to coordinate, particularly in walking. His wife said that he was mentally confused and irritable. He had worked as a plumber many years and had handled considerable red lead. He had also been in many new houses where painting was being done, and had worked a good deal with boiling lead. Therefore, there was a possibility of poisoning from the gastro-intestinal tract, or by droplets and fumes from