no longer desirable. I am certified by the American Boards of Internal Medicine, and am a Fellow of the American Occupational Medical Association. I am registered in the states of California, Texes, and Illinois to practice medicine. Finally, as part of my internal medical training, I did one year of intensive pathology. Now for my observation: I was immediately struck by the remarkable frequency of visual difficulties and the frequency of thyroid tumors. The frequency of thyroid tumors was shown by the examination of a number of patients who demonstrated thyroidectomy scars; by the examination of some hospital record, and most important by the history cf the people telling me of the epidemic of these disorders on their islands. Since the populations on the islands varied from two hundred to more, often, particularly in the smaller islands, the individuals who spoke to me where able to give me a pretty fair idea of the number of thyroid tumors and visual difficulties that appeared on their island. Since the nuclear explosions there has been a remarkable epidemic of thyroid tumors in the Marshall Islands, -to my knowledge a singular epicemic since I] have never seen its like before, -- starting about fifteen years or so after the onset of the atcmic explosions, and continuing to the present. Some of the victims épparently were in their teens or pre-teens during the explosicns and were most characteristically female but some of the victims were probably not yet born at the time of the explosion, althouch I do not have such a concise chronology that I can sey this with ebsolute certainty. I recall seeing one patient young encugh so that it weuld be hardly likely that she would have been born curing the explcsions. The thyroidectemy scars that I saw on these patients were large scars, and for the most part it seems to me that the entire thyroid hed been removed. This was borne