The point of departure for this paper is the investigation made under the direction of a committee appointed by the Surgeon General of the U. S. Public Health Service to determine the hazard from the use of lead in ethyl gasoline. The results of this investigation have been published as Public Health Bulletin number 163. Briefly, they were that there was no evidence of lead poisoning from such gasoline after exposures approximating two years. Studies are nevertheless being continued to determine whether longer exposure might not produce symptoms of plumbism. No such symptoms have been found in the year that has elapsed since the report was made.
DISTRIBUTION OF LEAD
The investigation developed several facts which are worthy of mention in connection with lead hazards in general. Perhaps the most striking of these facts was the discovery of a considerable proportion of lead in the dust of garages, even when