4 ) IH hae) The ebove-nentioned sperzatozoal abnormalities were observed also in 6 patients with children under the age of 5. That is to say, the Bikini explosion deprived a nweber of young men of the normal fertility they had possessed before, ec) The fact that all the men showed 2 decrease in number and mobility of speriatozoa, an increase in ratio of the deforrity of spermatozea, etc. indicates that they are suffering from the one and same external cause -- namely, radiation injury. The lack of mobility of spermatozoa in many instances, a considerable decrease joe ad) in number of spermatozoa, and the high (o. 2 4 percentase in & e defornity of spermatozoa, novably in the + 1a IO b) heads, give rise to grave apprehension about the future of these patients. e) Of those vhose number of spermatozoa was comparatively large at the firsv examination, 2 showed at the second examiCc o ° nation a decrease in not only number but elso mobility of spermatozoa, and at the third examination the symptoms were found to have worsened rather than improved. These facts proves that in the testis there wes a cisturbence affecting the formation of spermatozoa; that in the first examination the already formed spermatozoa had been excreted; and that in the second and subsequent exa inations there had taken place a decrease in nunber of sper:atozoa and necrospermia. 6,